re.sub() leaks references #120244

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re.sub() leaks references#120244

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extension-modulesC modules in the Modules dirC modules in the Modules dirtype-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

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neonene

opened on Jun 7, 2024

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Bug description:

>python_d -X showrefcount -c "import re; re.sub(r'()', r'\1', '')"
[7140 refs, 4669 blocks]

_strptime is a module affected by this.

CPython versions tested on:

3.10, 3.11, 3.12, 3.13, CPython main branch

Operating systems tested on:

Windows

Linked PRs

• gh-120244: Fix re.sub() reference leak #120245
• [3.13] gh-120244: Fix re.sub() reference leak (GH-120245) #120264
• [3.12] gh-120244: Fix re.sub() reference leak (GH-120245) #120265

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extension-modulesC modules in the Modules dirC modules in the Modules dirtype-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

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