gh-108342: Break ref cycle in SSLSocket._create() exc by vstinner · Pull Request #108344 · python/cpython · GitHub

Break explicitly a reference cycle when SSLSocket._create() raises an exception. Clear the variable storing the exception, since the exception traceback contains the variables and so creates a reference cycle.

Issue: test_ssl fails with "env changed" on ARM64 Windows buildbot: thread doesn't catch TimeoutError #108342

Break explicitly a reference cycle when SSLSocket._create() raises an exception. Clear the variable storing the exception, since the exception traceback contains the variables and so creates a reference cycle.

Without this change, the following test fails:

$ ./python -m test test_ssl -u all --fail-env-changed -v -m test_preauth_data_to_tls_server
(...)
Warning -- threading_cleanup() failed to cleanup 0 threads (count: 0, dangling: 2)
Warning -- Dangling thread: <SingleConnectionTestServerThread(preauth_data_to_tls_server, stopped 140038007256768)>
Warning -- Dangling thread: <_MainThread(MainThread, started 140038253725504)>
(...)
Tests result: ENV CHANGED

With this PR, the test pass.

cc @ambv @gpshead

Thanks! I missed this one during testing (I think it doesn't always show up? due to gc cycle check timing?)

Thanks @vstinner for the PR, and @gpshead for merging it 🌮🎉.. I'm working now to backport this PR to: 3.8, 3.9, 3.10, 3.11, 3.12.
🐍🍒⛏🤖

GH-108348 is a backport of this pull request to the 3.12 branch.

…-108344) Explicitly break a reference cycle when SSLSocket._create() raises an exception. Clear the variable storing the exception, since the exception traceback contains the variables and so creates a reference cycle. This test leak was introduced by the test added for the fix of pythonGH-108310. (cherry picked from commit 64f9935) Co-authored-by: Victor Stinner <vstinner@python.org>

GH-108349 is a backport of this pull request to the 3.11 branch.

…-108344) Explicitly break a reference cycle when SSLSocket._create() raises an exception. Clear the variable storing the exception, since the exception traceback contains the variables and so creates a reference cycle. This test leak was introduced by the test added for the fix of pythonGH-108310. (cherry picked from commit 64f9935) Co-authored-by: Victor Stinner <vstinner@python.org>

GH-108350 is a backport of this pull request to the 3.10 branch.

GH-108351 is a backport of this pull request to the 3.9 branch.

…-108344) Explicitly break a reference cycle when SSLSocket._create() raises an exception. Clear the variable storing the exception, since the exception traceback contains the variables and so creates a reference cycle. This test leak was introduced by the test added for the fix of pythonGH-108310. (cherry picked from commit 64f9935) Co-authored-by: Victor Stinner <vstinner@python.org>

GH-108352 is a backport of this pull request to the 3.8 branch.

…-108344) Explicitly break a reference cycle when SSLSocket._create() raises an exception. Clear the variable storing the exception, since the exception traceback contains the variables and so creates a reference cycle. This test leak was introduced by the test added for the fix of pythonGH-108310. (cherry picked from commit 64f9935) Co-authored-by: Victor Stinner <vstinner@python.org>

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 Fedora Stable Clang 3.x has failed when building commit 64f9935.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/441/builds/4285) and take a look at the build logs.
Check if the failure is related to this commit (64f9935) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/441/builds/4285

Summary of the results of the build (if available):

== Tests result: ENV CHANGED ==

432 tests OK.

10 slowest tests:

test_concurrent_futures: 2 min 31 sec
test_multiprocessing_spawn: 2 min 15 sec
test_multiprocessing_forkserver: 1 min 25 sec
test_math: 1 min 14 sec
test_multiprocessing_fork: 1 min 13 sec
test_gdb: 1 min 1 sec
test_socket: 54.9 sec
test_signal: 50.5 sec
test_capi: 49.3 sec
test_unparse: 48.8 sec

1 test altered the execution environment:
test_ssl

14 tests skipped:
test.test_asyncio.test_windows_events
test.test_asyncio.test_windows_utils test_devpoll test_ioctl
test_kqueue test_launcher test_startfile test_tkinter test_ttk
test_winconsoleio test_winreg test_winsound test_wmi
test_zipfile64

Total duration: 4 min 11 sec

Click to see traceback logs

remote: Enumerating objects: 4, done.        
remote: Counting objects:  25% (1/4)        
remote: Counting objects:  50% (2/4)        
remote: Counting objects:  75% (3/4)        
remote: Counting objects: 100% (4/4)        
remote: Counting objects: 100% (4/4), done.        
remote: Compressing objects:  33% (1/3)        
remote: Compressing objects:  66% (2/3)        
remote: Compressing objects: 100% (3/3)        
remote: Compressing objects: 100% (3/3), done.        
remote: Total 4 (delta 1), reused 1 (delta 1), pack-reused 0        
From https://github.com/python/cpython
 * branch                  main       -> FETCH_HEAD
Note: switching to '64f99350351bc46e016b2286f36ba7cd669b79e3'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at 64f9935035 gh-108342: Break ref cycle in SSLSocket._create() exc (#108344)
Switched to and reset branch 'main'

make: *** [Makefile:2034: buildbottest] Error 3

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 RHEL8 LTO + PGO 3.x has failed when building commit 64f9935.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/568/builds/4611) and take a look at the build logs.
Check if the failure is related to this commit (64f9935) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/568/builds/4611

Summary of the results of the build (if available):

== Tests result: ENV CHANGED ==

431 tests OK.

10 slowest tests:

test_concurrent_futures: 2 min 12 sec
test_multiprocessing_spawn: 1 min 27 sec
test_multiprocessing_forkserver: 1 min 13 sec
test_multiprocessing_fork: 1 min 4 sec
test_signal: 1 min
test_io: 34.7 sec
test_socket: 31.7 sec
test_imaplib: 30.7 sec
test_subprocess: 30.5 sec
test_xmlrpc: 27.5 sec

1 test altered the execution environment:
test_ssl

15 tests skipped:
test.test_asyncio.test_windows_events
test.test_asyncio.test_windows_utils test_devpoll test_gdb
test_ioctl test_kqueue test_launcher test_startfile test_tkinter
test_ttk test_winconsoleio test_winreg test_winsound test_wmi
test_zipfile64

Total duration: 2 min 56 sec

Click to see traceback logs

remote: Enumerating objects: 4, done.        
remote: Counting objects:  25% (1/4)        
remote: Counting objects:  50% (2/4)        
remote: Counting objects:  75% (3/4)        
remote: Counting objects: 100% (4/4)        
remote: Counting objects: 100% (4/4), done.        
remote: Compressing objects:  33% (1/3)        
remote: Compressing objects:  66% (2/3)        
remote: Compressing objects: 100% (3/3)        
remote: Compressing objects: 100% (3/3), done.        
remote: Total 4 (delta 1), reused 1 (delta 1), pack-reused 0        
From https://github.com/python/cpython
 * branch                  main       -> FETCH_HEAD
Note: switching to '64f99350351bc46e016b2286f36ba7cd669b79e3'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at 64f9935035 gh-108342: Break ref cycle in SSLSocket._create() exc (#108344)
Switched to and reset branch 'main'

find: ‘build’: No such file or directory
find: ‘build’: No such file or directory
find: ‘build’: No such file or directory
find: ‘build’: No such file or directory
make[2]: [Makefile:2809: clean-retain-profile] Error 1 (ignored)
./Modules/_decimal/libmpdec/context.c:57: warning: mpd_setminalloc: ignoring request to set MPD_MINALLOC a second time

./Modules/_decimal/libmpdec/context.c:57: warning: mpd_setminalloc: ignoring request to set MPD_MINALLOC a second time


make: *** [Makefile:2034: buildbottest] Error 3

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 Fedora Stable LTO + PGO 3.x has failed when building commit 64f9935.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/29/builds/4538) and take a look at the build logs.
Check if the failure is related to this commit (64f9935) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/29/builds/4538

Summary of the results of the build (if available):

== Tests result: ENV CHANGED ==

431 tests OK.

10 slowest tests:

test_concurrent_futures: 2 min 12 sec
test_multiprocessing_spawn: 1 min 31 sec
test_multiprocessing_forkserver: 1 min 10 sec
test_multiprocessing_fork: 1 min 5 sec
test_signal: 55.6 sec
test_socket: 44.1 sec
test_io: 36.6 sec
test_imaplib: 30.3 sec
test_subprocess: 28.2 sec
test_xmlrpc: 27.5 sec

1 test altered the execution environment:
test_ssl

15 tests skipped:
test.test_asyncio.test_windows_events
test.test_asyncio.test_windows_utils test_devpoll test_gdb
test_ioctl test_kqueue test_launcher test_startfile test_tkinter
test_ttk test_winconsoleio test_winreg test_winsound test_wmi
test_zipfile64

Total duration: 3 min 32 sec

Click to see traceback logs

remote: Enumerating objects: 4, done.        
remote: Counting objects:  25% (1/4)        
remote: Counting objects:  50% (2/4)        
remote: Counting objects:  75% (3/4)        
remote: Counting objects: 100% (4/4)        
remote: Counting objects: 100% (4/4), done.        
remote: Compressing objects:  33% (1/3)        
remote: Compressing objects:  66% (2/3)        
remote: Compressing objects: 100% (3/3)        
remote: Compressing objects: 100% (3/3), done.        
remote: Total 4 (delta 1), reused 1 (delta 1), pack-reused 0        
From https://github.com/python/cpython
 * branch                  main       -> FETCH_HEAD
Note: switching to '64f99350351bc46e016b2286f36ba7cd669b79e3'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at 64f9935035 gh-108342: Break ref cycle in SSLSocket._create() exc (#108344)
Switched to and reset branch 'main'

find: ‘build’: No such file or directory
find: ‘build’: No such file or directory
find: ‘build’: No such file or directory
find: ‘build’: No such file or directory
make[2]: [Makefile:2809: clean-retain-profile] Error 1 (ignored)
In function ‘_io_FileIO_close_impl’,
    inlined from ‘_io_FileIO_close’ at ./Modules/_io/clinic/fileio.c.h:33:12:
./Modules/_io/fileio.c:170:9: warning: ‘exc’ may be used uninitialized [-Wmaybe-uninitialized]
  170 |         _PyErr_ChainExceptions1(exc);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Modules/_io/fileio.c: In function ‘_io_FileIO_close’:
./Modules/_io/fileio.c:155:15: note: ‘exc’ was declared here
  155 |     PyObject *exc;
      |               ^~~
./Modules/_decimal/libmpdec/context.c:56: warning: mpd_setminalloc: ignoring request to set MPD_MINALLOC a second time

./Modules/_decimal/libmpdec/context.c:56: warning: mpd_setminalloc: ignoring request to set MPD_MINALLOC a second time

In file included from Python/bltinmodule.c:6:
In function ‘_PyObject_VectorcallTstate’,
    inlined from ‘_PyObject_VectorcallTstate’ at ./Include/internal/pycore_call.h:171:1,
    inlined from ‘map_next’ at Python/bltinmodule.c:1393:14:
./Include/internal/pycore_call.h:184:16: warning: ‘small_stack’ may be used uninitialized [-Wmaybe-uninitialized]
  184 |         return _PyObject_MakeTpCall(tstate, callable, args, nargs, kwnames);
      |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Include/internal/pycore_call.h: In function ‘map_next’:
./Include/internal/pycore_call.h:125:23: note: by argument 3 of type ‘struct PyObject * const *’ to ‘_PyObject_MakeTpCall’ declared here
  125 | PyAPI_FUNC(PyObject*) _PyObject_MakeTpCall(
      |                       ^~~~~~~~~~~~~~~~~~~~
Python/bltinmodule.c:1365:15: note: ‘small_stack’ declared here
 1365 |     PyObject *small_stack[_PY_FASTCALL_SMALL_STACK];
      |               ^~~~~~~~~~~
In function ‘_PyObject_VectorcallTstate’,
    inlined from ‘_PyObject_VectorcallTstate’ at ./Include/internal/pycore_call.h:171:1,
    inlined from ‘map_next’ at Python/bltinmodule.c:1393:14:
./Include/internal/pycore_call.h:184:16: warning: ‘small_stack’ may be used uninitialized [-Wmaybe-uninitialized]
  184 |         return _PyObject_MakeTpCall(tstate, callable, args, nargs, kwnames);
      |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Include/internal/pycore_call.h: In function ‘map_next’:
./Include/internal/pycore_call.h:125:23: note: by argument 3 of type ‘struct PyObject * const *’ to ‘_PyObject_MakeTpCall’ declared here
  125 | PyAPI_FUNC(PyObject*) _PyObject_MakeTpCall(
      |                       ^~~~~~~~~~~~~~~~~~~~
Python/bltinmodule.c:1365:15: note: ‘small_stack’ declared here
 1365 |     PyObject *small_stack[_PY_FASTCALL_SMALL_STACK];
      |               ^~~~~~~~~~~
In function ‘_io_FileIO_close_impl’,
    inlined from ‘_io_FileIO_close’ at ./Modules/_io/clinic/fileio.c.h:33:12:
./Modules/_io/fileio.c:170:9: warning: ‘exc’ may be used uninitialized [-Wmaybe-uninitialized]
  170 |         _PyErr_ChainExceptions1(exc);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Modules/_io/fileio.c: In function ‘_io_FileIO_close’:
./Modules/_io/fileio.c:155:15: note: ‘exc’ was declared here
  155 |     PyObject *exc;
      |               ^~~
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
In function ‘_mpd_to_string’:
cc1: note: destination object is likely at address zero
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘doParseXmlDecl’ at ./Modules/expat/xmltok.c:1197:13:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Modules/expat/xmltok.c: In function ‘doParseXmlDecl’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^~~
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘parsePseudoAttribute’ at ./Modules/expat/xmltok.c:1075:9:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Modules/expat/xmltok.c: In function ‘parsePseudoAttribute’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^~~
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘parsePseudoAttribute’ at ./Modules/expat/xmltok.c:1081:12:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Modules/expat/xmltok.c: In function ‘parsePseudoAttribute’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^~~
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘parsePseudoAttribute’ at ./Modules/expat/xmltok.c:1081:12:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Modules/expat/xmltok.c: In function ‘parsePseudoAttribute’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^~~
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘parsePseudoAttribute’ at ./Modules/expat/xmltok.c:1088:9:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Modules/expat/xmltok.c: In function ‘parsePseudoAttribute’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^~~
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘parsePseudoAttribute’ at ./Modules/expat/xmltok.c:1088:9:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Modules/expat/xmltok.c: In function ‘parsePseudoAttribute’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^~~
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘parsePseudoAttribute’ at ./Modules/expat/xmltok.c:1115:7:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Modules/expat/xmltok.c: In function ‘parsePseudoAttribute’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^~~
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘parsePseudoAttribute’ at ./Modules/expat/xmltok.c:1128:9:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Modules/expat/xmltok.c: In function ‘parsePseudoAttribute’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^~~
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘parsePseudoAttribute’ at ./Modules/expat/xmltok.c:1128:9:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Modules/expat/xmltok.c: In function ‘parsePseudoAttribute’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^~~
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘doParseXmlDecl’ at ./Modules/expat/xmltok.c:1197:13:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^
./Modules/expat/xmltok.c: In function ‘doParseXmlDecl’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘parsePseudoAttribute’ at ./Modules/expat/xmltok.c:1075:9:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^
./Modules/expat/xmltok.c: In function ‘parsePseudoAttribute’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘parsePseudoAttribute’ at ./Modules/expat/xmltok.c:1081:12:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^
./Modules/expat/xmltok.c: In function ‘parsePseudoAttribute’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘parsePseudoAttribute’ at ./Modules/expat/xmltok.c:1081:12:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^
./Modules/expat/xmltok.c: In function ‘parsePseudoAttribute’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘parsePseudoAttribute’ at ./Modules/expat/xmltok.c:1088:9:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^
./Modules/expat/xmltok.c: In function ‘parsePseudoAttribute’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘parsePseudoAttribute’ at ./Modules/expat/xmltok.c:1088:9:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^
./Modules/expat/xmltok.c: In function ‘parsePseudoAttribute’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘parsePseudoAttribute’ at ./Modules/expat/xmltok.c:1115:7:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^
./Modules/expat/xmltok.c: In function ‘parsePseudoAttribute’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘parsePseudoAttribute’ at ./Modules/expat/xmltok.c:1128:9:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^
./Modules/expat/xmltok.c: In function ‘parsePseudoAttribute’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^
In function ‘utf8_toUtf8’,
    inlined from ‘toAscii’ at ./Modules/expat/xmltok.c:1043:3,
    inlined from ‘parsePseudoAttribute’ at ./Modules/expat/xmltok.c:1128:9:
./Modules/expat/xmltok.c:390:5: warning: ‘memcpy’ writing 2 or more bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
  390 |     memcpy(*toP, *fromP, bytesToCopy);
      |     ^
./Modules/expat/xmltok.c: In function ‘parsePseudoAttribute’:
./Modules/expat/xmltok.c:1041:8: note: destination object ‘buf’ of size 1
 1041 |   char buf[1];
      |        ^
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:359:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:358:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:359:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:360:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:357:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:356:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  356 |     case 18: EXTRACT_DIGIT(s, x, 100000000000000000ULL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:357:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:358:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:361:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:360:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:361:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:362:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:363:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:362:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:363:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:365:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:366:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:365:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:366:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:367:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:368:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:367:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:368:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:369:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:370:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:369:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:370:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:371:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:372:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:371:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:372:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:373:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero
lto1: note: destination object is likely at address zero
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13:
./Modules/_decimal/libmpdec/io.c:373:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
In function ‘coeff_to_string’:
lto1: note: destination object is likely at address zero

make: *** [Makefile:2034: buildbottest] Error 3

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 Fedora Stable LTO 3.x has failed when building commit 64f9935.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/271/builds/3746) and take a look at the build logs.
Check if the failure is related to this commit (64f9935) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/271/builds/3746

Failed tests:

test.test_asyncio.test_subprocess

Failed subtests:

test_subprocess_consistent_callbacks - test.test_asyncio.test_subprocess.SubprocessSafeWatcherTests.test_subprocess_consistent_callbacks
test_subprocess_consistent_callbacks - test.test_asyncio.test_subprocess.SubprocessThreadedWatcherTests.test_subprocess_consistent_callbacks

Summary of the results of the build (if available):

== Tests result: FAILURE then ENV CHANGED ==

432 tests OK.

10 slowest tests:

test_gdb: 2 min 39 sec
test_concurrent_futures: 2 min 16 sec
test_multiprocessing_spawn: 1 min 32 sec
test_multiprocessing_forkserver: 1 min 11 sec
test_multiprocessing_fork: 1 min 5 sec
test_signal: 1 min
test_socket: 44.0 sec
test_io: 35.4 sec
test_imaplib: 30.3 sec
test_math: 30.3 sec

1 test altered the execution environment:
test_ssl

14 tests skipped:
test.test_asyncio.test_windows_events
test.test_asyncio.test_windows_utils test_devpoll test_ioctl
test_kqueue test_launcher test_startfile test_tkinter test_ttk
test_winconsoleio test_winreg test_winsound test_wmi
test_zipfile64

1 re-run test:
test.test_asyncio.test_subprocess

Total duration: 3 min 32 sec

Click to see traceback logs

Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-x86_64.lto/build/Lib/test/test_asyncio/test_subprocess.py", line 788, in test_subprocess_consistent_callbacks
    self.loop.run_until_complete(main())
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-x86_64.lto/build/Lib/asyncio/base_events.py", line 664, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-x86_64.lto/build/Lib/test/test_asyncio/test_subprocess.py", line 780, in main
    self.assertEqual(events, [
AssertionError: Lists differ: ['process_exited', ('pipe_data_received', 1, b'stdout')] != [('pipe_data_received', 1, b'stdout'), ('p[95 chars]ted']


Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-x86_64.lto/build/Lib/test/test_asyncio/test_subprocess.py", line 788, in test_subprocess_consistent_callbacks
    self.loop.run_until_complete(main())
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-x86_64.lto/build/Lib/asyncio/base_events.py", line 664, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-x86_64.lto/build/Lib/test/test_asyncio/test_subprocess.py", line 780, in main
    self.assertEqual(events, [
AssertionError: Lists differ: [('pi[69 chars]), 'process_exited', 'pipe_connection_lost', '[17 chars]ost'] != [('pi[69 chars]), 'pipe_connection_lost', 'pipe_connection_lo[17 chars]ted']

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 Arch Linux Asan 3.x has failed when building commit 64f9935.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/582/builds/3840) and take a look at the build logs.
Check if the failure is related to this commit (64f9935) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/582/builds/3840

Summary of the results of the build (if available):

== Tests result: ENV CHANGED ==

422 tests OK.

10 slowest tests:

test_math: 2 min 16 sec
test_subprocess: 2 min 1 sec
test_signal: 1 min 11 sec
test_unparse: 1 min 1 sec
test_tokenize: 54.1 sec
test_io: 42.7 sec
test_unicodedata: 39.8 sec
test_compileall: 39.4 sec
test_socket: 34.2 sec
test_venv: 32.7 sec

1 test altered the execution environment:
test_ssl

24 tests skipped:
test.test_asyncio.test_subprocess
test.test_asyncio.test_windows_events
test.test_asyncio.test_windows_utils test_clinic
test_concurrent_futures test_devpoll test_generated_cases
test_idle test_ioctl test_kqueue test_launcher
test_multiprocessing_fork test_multiprocessing_forkserver
test_multiprocessing_spawn test_peg_generator test_startfile
test_tkinter test_tools test_ttk test_winconsoleio test_winreg
test_winsound test_wmi test_zipfile64

Total duration: 14 min 28 sec

Click to see traceback logs

remote: Enumerating objects: 9, done.        
remote: Counting objects:  11% (1/9)        
remote: Counting objects:  22% (2/9)        
remote: Counting objects:  33% (3/9)        
remote: Counting objects:  44% (4/9)        
remote: Counting objects:  55% (5/9)        
remote: Counting objects:  66% (6/9)        
remote: Counting objects:  77% (7/9)        
remote: Counting objects:  88% (8/9)        
remote: Counting objects: 100% (9/9)        
remote: Counting objects: 100% (9/9), done.        
remote: Compressing objects:  12% (1/8)        
remote: Compressing objects:  25% (2/8)        
remote: Compressing objects:  37% (3/8)        
remote: Compressing objects:  50% (4/8)        
remote: Compressing objects:  62% (5/8)        
remote: Compressing objects:  75% (6/8)        
remote: Compressing objects:  87% (7/8)        
remote: Compressing objects: 100% (8/8)        
remote: Compressing objects: 100% (8/8), done.        
remote: Total 9 (delta 1), reused 5 (delta 1), pack-reused 0        
From https://github.com/python/cpython
 * branch                  main       -> FETCH_HEAD
Note: switching to '64f99350351bc46e016b2286f36ba7cd669b79e3'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at 64f9935035 gh-108342: Break ref cycle in SSLSocket._create() exc (#108344)
Switched to and reset branch 'main'

In function ‘_io_FileIO_close_impl’,
    inlined from ‘_io_FileIO_close’ at ./Modules/_io/clinic/fileio.c.h:33:12:
./Modules/_io/fileio.c:170:9: warning: ‘exc’ may be used uninitialized [-Wmaybe-uninitialized]
  170 |         _PyErr_ChainExceptions1(exc);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Modules/_io/fileio.c: In function ‘_io_FileIO_close’:
./Modules/_io/fileio.c:155:15: note: ‘exc’ was declared here
  155 |     PyObject *exc;
      |               ^~~
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:357:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:356:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  356 |     case 18: EXTRACT_DIGIT(s, x, 100000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:357:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:357:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:356:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  356 |     case 18: EXTRACT_DIGIT(s, x, 100000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:357:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:501:22:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:357:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:356:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  356 |     case 18: EXTRACT_DIGIT(s, x, 100000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:357:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~

make: *** [Makefile:2034: buildbottest] Error 3

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 Arch Linux Perf 3.x has failed when building commit 64f9935.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/1078/builds/1584) and take a look at the build logs.
Check if the failure is related to this commit (64f9935) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/1078/builds/1584

Summary of the results of the build (if available):

== Tests result: ENV CHANGED ==

432 tests OK.

10 slowest tests:

test_concurrent_futures: 2 min 12 sec
test_multiprocessing_spawn: 1 min 21 sec
test_multiprocessing_forkserver: 1 min 5 sec
test_multiprocessing_fork: 59.8 sec
test_signal: 59.6 sec
test_subprocess: 51.3 sec
test_io: 33.8 sec
test_socket: 29.1 sec
test_xmlrpc: 27.4 sec
test_math: 27.1 sec

1 test altered the execution environment:
test_ssl

14 tests skipped:
test.test_asyncio.test_windows_events
test.test_asyncio.test_windows_utils test_devpoll test_ioctl
test_kqueue test_launcher test_startfile test_tkinter test_ttk
test_winconsoleio test_winreg test_winsound test_wmi
test_zipfile64

Total duration: 9 min 59 sec

Click to see traceback logs

Note: switching to '64f99350351bc46e016b2286f36ba7cd669b79e3'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at 64f9935035 gh-108342: Break ref cycle in SSLSocket._create() exc (#108344)
Switched to and reset branch 'main'

In function ‘_io_FileIO_close_impl’,
    inlined from ‘_io_FileIO_close’ at ./Modules/_io/clinic/fileio.c.h:33:12:
./Modules/_io/fileio.c:170:9: warning: ‘exc’ may be used uninitialized [-Wmaybe-uninitialized]
  170 |         _PyErr_ChainExceptions1(exc);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Modules/_io/fileio.c: In function ‘_io_FileIO_close’:
./Modules/_io/fileio.c:155:15: note: ‘exc’ was declared here
  155 |     PyObject *exc;
      |               ^~~
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:357:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:356:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  356 |     case 18: EXTRACT_DIGIT(s, x, 100000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:357:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:357:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:356:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  356 |     case 18: EXTRACT_DIGIT(s, x, 100000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:357:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:501:22:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:357:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:359:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:356:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  356 |     case 18: EXTRACT_DIGIT(s, x, 100000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:357:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:358:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:360:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:361:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:362:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:363:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:365:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:366:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:367:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:368:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:369:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:370:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:371:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:372:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:373:14: note: in expansion of macro ‘EXTRACT_DIGIT’
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^~~~~~~~~~~~~

make: *** [Makefile:2034: buildbottest] Error 3

…) (#108348) Explicitly break a reference cycle when SSLSocket._create() raises an exception. Clear the variable storing the exception, since the exception traceback contains the variables and so creates a reference cycle. This test leak was introduced by the test added for the fix of GH-108310. (cherry picked from commit 64f9935) Co-authored-by: Victor Stinner <vstinner@python.org>

…) (#108349) Explicitly break a reference cycle when SSLSocket._create() raises an exception. Clear the variable storing the exception, since the exception traceback contains the variables and so creates a reference cycle. This test leak was introduced by the test added for the fix of GH-108310. (cherry picked from commit 64f9935) Co-authored-by: Victor Stinner <vstinner@python.org>

…) (#108350) Explicitly break a reference cycle when SSLSocket._create() raises an exception. Clear the variable storing the exception, since the exception traceback contains the variables and so creates a reference cycle. This test leak was introduced by the test added for the fix of GH-108310. (cherry picked from commit 64f9935) Co-authored-by: Victor Stinner <vstinner@python.org>

… (#108351) Explicitly break a reference cycle when SSLSocket._create() raises an exception. Clear the variable storing the exception, since the exception traceback contains the variables and so creates a reference cycle. This test leak was introduced by the test added for the fix of GH-108310. (cherry picked from commit 64f9935) Co-authored-by: Victor Stinner <vstinner@python.org>

… (#108352) Explicitly break a reference cycle when SSLSocket._create() raises an exception. Clear the variable storing the exception, since the exception traceback contains the variables and so creates a reference cycle. This test leak was introduced by the test added for the fix of GH-108310. (cherry picked from commit 64f9935) Co-authored-by: Victor Stinner <vstinner@python.org>

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot PPC64 Fedora 3.9 has failed when building commit b8058b3.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/34/builds/642) and take a look at the build logs.
Check if the failure is related to this commit (b8058b3) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/34/builds/642

Summary of the results of the build (if available):

Click to see traceback logs

remote: Enumerating objects: 4, done.�[K
remote: Counting objects:  25% (1/4)�[K
remote: Counting objects:  50% (2/4)�[K
remote: Counting objects:  75% (3/4)�[K
remote: Counting objects: 100% (4/4)�[K
remote: Counting objects: 100% (4/4), done.�[K
remote: Compressing objects:  25% (1/4)�[K
remote: Compressing objects:  50% (2/4)�[K
remote: Compressing objects:  75% (3/4)�[K
remote: Compressing objects: 100% (4/4)�[K
remote: Compressing objects: 100% (4/4), done.�[K
remote: Total 4 (delta 0), reused 1 (delta 0), pack-reused 0�[K
From https://github.com/python/cpython
 * branch            3.9        -> FETCH_HEAD
Note: checking out 'b8058b3da542101f4a227ef2d6a263a5d73d7973'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b new_branch_name

HEAD is now at b8058b3... [3.9] gh-108342: Break ref cycle in SSLSocket._create() exc (GH-108344) (#108351)
Switched to and reset branch '3.9'

configure: WARNING: unrecognized options: --without-static-libpython
configure: WARNING: unrecognized options: --without-static-libpython

/tmp/ccs8HADc.s: Assembler messages:
/tmp/ccs8HADc.s: Fatal error: can't write 452 bytes to section .text of Objects/enumobject.o because: 'No space left on device'
/tmp/ccs8HADc.s: Fatal error: can't close Objects/enumobject.o: No space left on device
make: *** [Objects/enumobject.o] Error 1

find: ‘build’: No such file or directory
find: ‘build’: No such file or directory
find: ‘build’: No such file or directory
find: ‘build’: No such file or directory
make: [clean-retain-profile] Error 1 (ignored)

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 RHEL7 LTO + PGO 3.9 has failed when building commit b8058b3.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/240/builds/603) and take a look at the build logs.
Check if the failure is related to this commit (b8058b3) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/240/builds/603

Failed tests:

test_ssl

Failed subtests:

test_all - test.test___all__.AllTest
test_preauth_data_to_tls_client - test.test_ssl.TestPreHandshakeClose

Summary of the results of the build (if available):

== Tests result: FAILURE then FAILURE ==

411 tests OK.

10 slowest tests:

test_concurrent_futures: 2 min 20 sec
test_multiprocessing_spawn: 1 min 31 sec
test_multiprocessing_forkserver: 1 min 13 sec
test_multiprocessing_fork: 1 min 5 sec
test_asyncio: 46.8 sec
test_signal: 46.7 sec
test_io: 35.2 sec
test_pydoc: 31.3 sec
test_imaplib: 29.6 sec
test_xmlrpc: 27.5 sec

1 test failed:
test_ssl

13 tests skipped:
test_devpoll test_gdb test_ioctl test_kqueue test_msilib
test_startfile test_tix test_tk test_ttk_guionly test_winconsoleio
test_winreg test_winsound test_zipfile64

2 re-run tests:
test___all__ test_ssl

Total duration: 2 min 22 sec

Click to see traceback logs

Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.9.cstratak-RHEL7-x86_64.lto-pgo/build/Lib/multiprocessing/resource_tracker.py", line 201, in main
    cache[rtype].remove(name)
KeyError: '/psm_8d78296e'


Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.9.cstratak-RHEL7-x86_64.lto-pgo/build/Lib/test/test___all__.py", line 110, in test_all
    self.check_all(modname)
  File "/home/buildbot/buildarea/3.9.cstratak-RHEL7-x86_64.lto-pgo/build/Lib/test/test___all__.py", line 36, in check_all
    raise FailedImport(modname)
  File "/home/buildbot/buildarea/3.9.cstratak-RHEL7-x86_64.lto-pgo/build/Lib/contextlib.py", line 126, in __exit__
    next(self.gen)
  File "/home/buildbot/buildarea/3.9.cstratak-RHEL7-x86_64.lto-pgo/build/Lib/test/support/__init__.py", line 1229, in _filterwarnings
    raise AssertionError("unhandled warning %s" % reraise[0])
AssertionError: unhandled warning {message : DeprecationWarning('invalid escape sequence \\?'), category : 'DeprecationWarning', filename : '/home/buildbot/buildarea/3.9.cstratak-RHEL7-x86_64.lto-pgo/build/Lib/test/test_httpservers.py', lineno : 421, line : None}


Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.9.cstratak-RHEL7-x86_64.lto-pgo/build/Lib/multiprocessing/resource_tracker.py", line 201, in main
    cache[rtype].remove(name)
KeyError: '/psm_59c87705'


Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.9.cstratak-RHEL7-x86_64.lto-pgo/build/Lib/test/test_ssl.py", line 4988, in test_preauth_data_to_tls_client
    client.connect(server.listener.getsockname())
ConnectionResetError: [Errno 104] Connection reset by peer


Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.9.cstratak-RHEL7-x86_64.lto-pgo/build/Lib/multiprocessing/resource_tracker.py", line 201, in main
    cache[rtype].remove(name)
KeyError: '/psm_9510e7db'

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot PPC64LE RHEL7 3.9 has failed when building commit b8058b3.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/219/builds/544) and take a look at the build logs.
Check if the failure is related to this commit (b8058b3) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/219/builds/544

Failed tests:

test_ssl

Failed subtests:

test_preauth_data_to_tls_client - test.test_ssl.TestPreHandshakeClose

Summary of the results of the build (if available):

== Tests result: FAILURE then FAILURE ==

412 tests OK.

10 slowest tests:

test_tokenize: 7 min 4 sec
test_unparse: 6 min 43 sec
test_multiprocessing_spawn: 6 min 6 sec
test_lib2to3: 4 min 37 sec
test_concurrent_futures: 3 min 55 sec
test_gdb: 3 min 35 sec
test_multiprocessing_forkserver: 3 min 8 sec
test_unicodedata: 3 min 7 sec
test_capi: 2 min 48 sec
test_urllib2net: 2 min 45 sec

1 test failed:
test_ssl

12 tests skipped:
test_devpoll test_ioctl test_kqueue test_msilib test_startfile
test_tix test_tk test_ttk_guionly test_winconsoleio test_winreg
test_winsound test_zipfile64

1 re-run test:
test_ssl

Total duration: 11 min 25 sec

Click to see traceback logs

Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.9.cstratak-RHEL7-ppc64le/build/Lib/test/test_ssl.py", line 4988, in test_preauth_data_to_tls_client
    client.connect(server.listener.getsockname())
ConnectionResetError: [Errno 104] Connection reset by peer

Sadly, this fix was not enough :-( I'm investigating the issue to try to break reference cycles explicitly at more places.

The issue is easy to reproduce on Windows.

Sadly, this fix was not enough :-( I'm investigating the issue to try to break reference cycles explicitly at more places.

I wrote PR #108370 to fix the issue in more cases.

…thonGH-108344) (python#108351) Explicitly break a reference cycle when SSLSocket._create() raises an exception. Clear the variable storing the exception, since the exception traceback contains the variables and so creates a reference cycle. This test leak was introduced by the test added for the fix of pythonGH-108310. (cherry picked from commit 64f9935) Co-authored-by: Victor Stinner <vstinner@python.org>

pythongh-108342 : Break ref cycle in SSLSocket._create() exc

7d384a2

Break explicitly a reference cycle when SSLSocket._create() raises an exception. Clear the variable storing the exception, since the exception traceback contains the variables and so creates a reference cycle.

vstinner added the skip news label Aug 23, 2023

bedevere-bot mentioned this pull request Aug 23, 2023

test_ssl fails with "env changed" on ARM64 Windows buildbot: thread doesn't catch TimeoutError #108342

Closed

2 tasks done

bedevere-bot added the awaiting core review label Aug 23, 2023

reword the comment.

fc88854

gpshead added needs backport to 3.8 needs backport to 3.11 only security fixes needs backport to 3.12 only security fixes labels Aug 23, 2023

gpshead approved these changes Aug 23, 2023

View reviewed changes

bedevere-bot added awaiting merge and removed awaiting core review labels Aug 23, 2023

gpshead enabled auto-merge (squash) August 23, 2023 04:51

gpshead merged commit 64f9935 into python:main Aug 23, 2023

bedevere-bot removed the awaiting merge label Aug 23, 2023

bedevere-bot removed the needs backport to 3.12 only security fixes label Aug 23, 2023

bedevere-bot removed the needs backport to 3.11 only security fixes label Aug 23, 2023

bedevere-bot removed the needs backport to 3.10 label Aug 23, 2023

bedevere-bot removed the needs backport to 3.9 label Aug 23, 2023

bedevere-bot removed the needs backport to 3.8 label Aug 23, 2023

vstinner deleted the preauth branch August 23, 2023 13:03

vstinner mentioned this pull request Aug 23, 2023

gh-108342: Make ssl TestPreHandshakeClose more reliable #108370

Merged

vstinner mentioned this pull request Aug 23, 2023

gh-108314: Add PyDict_ContainsString() function #108323

Merged

gh-108342: Break ref cycle in SSLSocket._create() exc by vstinner · Pull Request #108344 · python/cpython · GitHub

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gh-108342: Break ref cycle in SSLSocket._create() exc - #108344

gh-108342: Break ref cycle in SSLSocket._create() exc#108344gpshead merged 2 commits intopython:mainpython/cpython:mainfrom vstinner:preauthvstinner/cpython:preauthCopy head branch name to clipboard

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gh-108342: Break ref cycle in SSLSocket._create() exc#108344
gpshead merged 2 commits into
python:mainfrom
vstinner:preauth

vstinner commented Aug 23, 2023 •
edited by bedevere-bot
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