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Fix test_capi on UBSan #151284
Description
Bug report
Currently, running test_fromwidechar() of test_capi on UBSan logs UBSan errors. Example:
$ UBSAN_OPTIONS="halt_on_error=1" ./python -m test -v test_capi -m test_fromwidechar
test_fromwidechar (test.test_capi.test_unicode.CAPITest.test_fromwidechar)
Test PyUnicode_FromWideChar() ...
Objects/unicodeobject.c:1942:38: runtime error: addition of unsigned offset to 0x0000017b51d8 overflowed to 0x0000017b51d4
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior Objects/unicodeobject.c:1942:38
I'm working on fixing these errors.
Activity
gh-151284: Fix test_capi on UBSan (#151286)
[3.13] gh-151284: Fix test_capi on UBSan (GH-151286) (#151325)
[3.14] gh-151284: Fix test_capi on UBSan (GH-151286) (#151324)
[3.15] gh-151284: Fix test_capi on UBSan (GH-151286) (#151323)
pythongh-151284: Fix test_capi on UBSan (python#151286)