[issue41175] Static analysis issues reported by GCC 10

[miss-islington]

miss-islington  added the comment:


New changeset 51b36ed96d29c9440fbca18fb0c9e3087f763da5 by Miss Islington (bot) 
in branch '3.9':
bpo-41175: Guard against a NULL pointer dereference within bytearrayobject 
(GH-21240)
https://github.com/python/cpython/commit/51b36ed96d29c9440fbca18fb0c9e3087f763da5


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[issue41175] Static analysis issues reported by GCC 10

[miss-islington]

miss-islington  added the comment:


New changeset 33672c019179be279ae979f709c974593fbbbe84 by Miss Islington (bot) 
in branch '3.8':
bpo-41175: Guard against a NULL pointer dereference within bytearrayobject 
(GH-21240)
https://github.com/python/cpython/commit/33672c019179be279ae979f709c974593fbbbe84


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[issue41175] Static analysis issues reported by GCC 10

[miss-islington]

Change by miss-islington :


--
pull_requests: +20579
pull_request: https://github.com/python/cpython/pull/21432

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[issue41175] Static analysis issues reported by GCC 10

[miss-islington]

Change by miss-islington :


--
nosy: +miss-islington
nosy_count: 2.0 -> 3.0
pull_requests: +20578
pull_request: https://github.com/python/cpython/pull/21431

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[issue41175] Static analysis issues reported by GCC 10

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 61fc23ca106bc82955b0e59d1ab42285b94899e2 by stratakis in branch 
'master':
bpo-41175: Guard against a NULL pointer dereference within bytearrayobject 
(GH-21240)
https://github.com/python/cpython/commit/61fc23ca106bc82955b0e59d1ab42285b94899e2


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[issue41175] Static analysis issues reported by GCC 10

[STINNER Victor]

Change by STINNER Victor :


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nosy: +vstinner

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[issue41175] Static analysis issues reported by GCC 10

[Charalampos Stratakis]

Change by Charalampos Stratakis :


--
keywords: +patch
pull_requests: +20392
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/21240

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[issue41175] Static analysis issues reported by GCC 10

[Charalampos Stratakis]

Charalampos Stratakis  added the comment:

First issue in Objects/bytearrayobject.c [0].

warning: use of NULL ‘’ where non-null expected [CWE-690] 
[-Wanalyzer-null-argument]
  277 | memcpy(result->ob_bytes, va.buf, va.len);

[0] https://github.com/python/cpython/blob/master/Objects/bytearrayobject.c#L277

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[issue41175] Static analysis issues reported by GCC 10

[Charalampos Stratakis]

New submission from Charalampos Stratakis :

GCC added a static analysis tool recently [0].

Running it under for CPython code base produces some interesting results.

Reproducer: ./configure --with-pydebug && CFLAGS='-fanalyzer' make

Attaching the log.

[0] https://developers.redhat.com/blog/2020/03/26/static-analysis-in-gcc-10/

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files: debugstaticanalysis.txt
messages: 372711
nosy: cstratak
priority: normal
severity: normal
status: open
title: Static analysis issues reported by GCC 10
versions: Python 3.10, Python 3.8, Python 3.9
Added file: https://bugs.python.org/file49281/debugstaticanalysis.txt

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