[3.9] bpo-41524: fix pointer bug in PyOS_mystr{n}icmp (GH-21845) #21978
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* bpo-41524: fix pointer bug in PyOS_mystr{n}icmp
The existing implementations of PyOS_mystrnicmp and PyOS_mystricmp
can increment pointers beyond the end of a string.
This commit fixes those cases by moving the mutation out of the condition.
* 📜🤖 Added by blurb_it.
* Address comments
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
(cherry picked from commit 97eaf2b)
Co-authored-by: wmeehan <wmeehan@users.noreply.github.com>
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The existing implementations of PyOS_mystrnicmp and PyOS_mystricmp
can increment pointers beyond the end of a string.
This commit fixes those cases by moving the mutation out of the condition.
📜🤖 Added by blurb_it.
Address comments
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
(cherry picked from commit 97eaf2b)
Co-authored-by: wmeehan wmeehan@users.noreply.github.com
https://bugs.python.org/issue41524