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gh-131591: Fix GENERATE_DEBUG_SECTION for clangcl on Windows by chris-eibl · Pull Request #132112 · python/cpython · GitHub

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gh-131591: Fix GENERATE_DEBUG_SECTION for clangcl on Windows #132112

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Merged
Fidget-Spinner merged 4 commits into from
Apr 5, 2025
+5 −3
Conversation 8 Commits 4 Checks 0 Files changed 3
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gh-131591: Fix GENERATE_DEBUG_SECTION for clangcl on Windows #132112

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1835fbb
Fix GENERATE_DEBUG_SECTION for clangcl on Windows
chris-eibl Apr 5, 2025
fc18d45
Trigger Windows tail-call CI
chris-eibl Apr 5, 2025
7c4dcbe
Revert "Trigger Windows tail-call CI"
chris-eibl Apr 5, 2025
565366a
update ignored.tsv
chris-eibl Apr 5, 2025
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4 changes: 3 additions & 1 deletion Include/internal/pycore_debug_offsets.h
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Expand Up @@ -23,7 +23,9 @@ extern "C" {
declaration \
_GENERATE_DEBUG_SECTION_LINUX(name)

#if defined(MS_WINDOWS) && !defined(__clang__)
// Please note that section names are truncated to eight bytes
// on Windows!
#if defined(MS_WINDOWS)

chris-eibl Apr 5, 2025

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

@Fidget-Spinner: clang-cl actually understands the __declspec and now we have the same section name without the . like for MSVC.
#define _GENERATE_DEBUG_SECTION_WINDOWS(name) \
_Pragma(Py_STRINGIFY(section(Py_STRINGIFY(name), read, write))) \
__declspec(allocate(Py_STRINGIFY(name)))
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2 changes: 1 addition & 1 deletion Modules/_asynciomodule.c
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Expand Up @@ -116,7 +116,7 @@ typedef struct _Py_AsyncioModuleDebugOffsets {
} asyncio_thread_state;
} Py_AsyncioModuleDebugOffsets;

GENERATE_DEBUG_SECTION(AsyncioDebug, Py_AsyncioModuleDebugOffsets AsyncioDebug)
GENERATE_DEBUG_SECTION(AsyncioDebug, Py_AsyncioModuleDebugOffsets _AsyncioDebug)

chris-eibl Apr 5, 2025 •
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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

Actually, this is the reason why clangcl failed with

error: symbol 'AsyncioDebug' is already defined

https://github.com/python/cpython/actions/runs/13288425017/job/37102791006#step:4:243

This also "syncs" with

cpython/Python/pylifecycle.c

Line 112 in ac14d4a

GENERATE_DEBUG_SECTION(PyRuntime, _PyRuntimeState _PyRuntime)

where _PyRuntime has a leading underscore, too.
= {.asyncio_task_object = {
.size = sizeof(TaskObj),
.task_name = offsetof(TaskObj, task_name),
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2 changes: 1 addition & 1 deletion Tools/c-analyzer/cpython/ignored.tsv
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Expand Up @@ -56,7 +56,7 @@ Python/pyhash.c - _Py_HashSecret -
Python/parking_lot.c - buckets -

## data needed for introspecting asyncio state from debuggers and profilers
Modules/_asynciomodule.c - AsyncioDebug -
Modules/_asynciomodule.c - _AsyncioDebug -


##################################
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