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gh-150436: Skip subprocess test on STATUS_DLL_INIT_FAILED by vstinner · Pull Request #150704 · python/cpython · GitHub

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gh-150436: Skip subprocess test on STATUS_DLL_INIT_FAILED - #150704

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vstinner merged 4 commits into
python:mainfrom
vstinner:desktop_heap_memory
Jun 1, 2026
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gh-150436: Skip subprocess test on STATUS_DLL_INIT_FAILED#150704
vstinner merged 4 commits into
python:mainfrom
vstinner:desktop_heap_memory

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vstinner commented Jun 1, 2026 •
edited by bedevere-app Bot
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If a subprocess spawned with CREATE_NEW_CONSOLE creation flag fails with STATUS_DLL_INIT_FAILED return code, skip the test. It's likely a memory allocation failure in the desktop heap memory which caused the DLL init failure.

pythongh-150436: Skip subprocess test on STATUS_DLL_INIT_FAILED
8aedb12 
If a subprocess spawned with CREATE_NEW_CONSOLE creation flag fails
with STATUS_DLL_INIT_FAILED return code, skip the test. It's likely a
memory allocation failure in the desktop heap memory which caused the
DLL init failure.
vstinner requested a review from gpshead as a code owner June 1, 2026 11:41
vstinner added tests Tests in the Lib/test dir OS-windows needs backport to 3.13 only security fixes needs backport to 3.14 bugs and security fixes needs backport to 3.15 bugs and security fixes labels Jun 1, 2026
bedevere-app Bot mentioned this pull request Jun 1, 2026
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vstinner commented Jun 1, 2026

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cc @zooba @chris-eibl

vstinner commented Jun 1, 2026

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See also articles:

vstinner commented Jun 1, 2026

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There was a tool named DHeapMon.exe to monitor the usage of the Desktop Heap Memory, but I failed to find a website to download it. It seems like it's not longer maintained.

chris-eibl self-requested a review June 1, 2026 14:01
vstinner enabled auto-merge (squash) June 1, 2026 14:27
vstinner merged commit e8034dd into python:main Jun 1, 2026
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vstinner deleted the desktop_heap_memory branch June 1, 2026 14:50

miss-islington-app Bot commented Jun 1, 2026

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Thanks @vstinner for the PR 🌮🎉.. I'm working now to backport this PR to: 3.13, 3.14, 3.15.
🐍🍒⛏🤖

miss-islington-app Bot commented Jun 1, 2026

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Sorry, @vstinner, I could not cleanly backport this to 3.14 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker e8034dd841808416e243a4b2f8e08f0edf9caff3 3.14

miss-islington-app Bot commented Jun 1, 2026

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Sorry, @vstinner, I could not cleanly backport this to 3.13 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker e8034dd841808416e243a4b2f8e08f0edf9caff3 3.13

bedevere-app Bot commented Jun 1, 2026

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GH-150713 is a backport of this pull request to the 3.15 branch.

bedevere-app Bot removed the needs backport to 3.15 bugs and security fixes label Jun 1, 2026

bedevere-app Bot commented Jun 1, 2026

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GH-150715 is a backport of this pull request to the 3.14 branch.

bedevere-app Bot removed the needs backport to 3.14 bugs and security fixes label Jun 1, 2026
vstinner removed the needs backport to 3.13 only security fixes label Jun 1, 2026
vstinner added a commit that referenced this pull request Jun 1, 2026
[3.14] gh-150436: Skip subprocess test on STATUS_DLL_INIT_FAILED (#15…
d5b07a9 
…0704) (#150715)

gh-150436: Skip subprocess test on STATUS_DLL_INIT_FAILED (#150704)

If a subprocess spawned with CREATE_NEW_CONSOLE creation flag fails
with STATUS_DLL_INIT_FAILED return code, skip the test. It's likely a
memory allocation failure in the desktop heap memory which caused the
DLL init failure.

(cherry picked from commit e8034dd)

bedevere-app Bot commented Jun 1, 2026

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GH-150721 is a backport of this pull request to the 3.13 branch.

vstinner added a commit that referenced this pull request Jun 1, 2026
[3.13] gh-150436: Skip subprocess test on STATUS_DLL_INIT_FAILED (#15…
ff9c8de 
…0704) (#150721)

gh-150436: Skip subprocess test on STATUS_DLL_INIT_FAILED (#150704)

If a subprocess spawned with CREATE_NEW_CONSOLE creation flag fails
with STATUS_DLL_INIT_FAILED return code, skip the test. It's likely a
memory allocation failure in the desktop heap memory which caused the
DLL init failure.

(cherry picked from commit e8034dd)
vstinner added a commit that referenced this pull request Jun 4, 2026
[3.15] gh-150436: Skip subprocess test on STATUS_DLL_INIT_FAILED (GH-…
6b46aac 
…150704) (#150713)

gh-150436: Skip subprocess test on STATUS_DLL_INIT_FAILED (GH-150704)

If a subprocess spawned with CREATE_NEW_CONSOLE creation flag fails
with STATUS_DLL_INIT_FAILED return code, skip the test. It's likely a
memory allocation failure in the desktop heap memory which caused the
DLL init failure.
(cherry picked from commit e8034dd)

Co-authored-by: Victor Stinner <vstinner@python.org>
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zooba zooba approved these changes
chris-eibl chris-eibl approved these changes
gpshead Awaiting requested review from gpshead gpshead is a code owner

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