[issue42587] test_buffer fails on Python built with GCC 11

STINNER Victor added the comment: See also: Behavior of struct “?” format (native _Bool) https://discuss.python.org/t/behavior-of-struct-format-native-bool/3774 -- ___ Python tracker

[issue42587] test_buffer fails on Python built with GCC 11

STINNER Victor added the comment: > FAIL: test_memoryview_cast (test.test_buffer.TestBufferProtocol) On AArch64, GCC 11 miscompiles unpack_cmp() of Objects/memoryview.c for the '?' case: /* boolean */ case '?': CMP_SINGLE(p, q, _Bool); return equal; I reported the bug to GCC

[issue42587] test_buffer fails on Python built with GCC 11

STINNER Victor added the comment: > FAIL: test_memoryview_cast (test.test_buffer.TestBufferProtocol) It might be related to _Bool. See also bpo-39689. -- ___ Python tracker

[issue42587] test_buffer fails on Python built with GCC 11

STINNER Victor added the comment: test_buffer also fails with GCC 11 on Python 3.8 built without LTO nor PGO, just -Og (./configure --enable-pydebug). PPC64LE Fedora Rawhide Refleaks 3.8: https://buildbot.python.org/all/#/builders/398/builds/101 test.pythoninfo: sysconfig[CFLAGS]:

[issue42587] test_buffer fails on Python built with GCC 11

STINNER Victor added the comment: Copy of Miro Hrončok's email to Fedora python-devel list: https://lists.fedoraproject.org/archives/list/python-de...@lists.fedoraproject.org/thread/ADKCB6HXGZHJPYX5LSJ7422FITYSOAL3/ Hello. I've been notified that many of the Python interpreters started

[issue42587] test_buffer fails on Python built with GCC 11

STINNER Victor added the comment: On Python 3.6/x86-64, Python does crash in libregrtest while loading test_code: 0:01:13 load avg: 2.23 [ 56/406] test_code Fatal Python error: Segmentation fault Current thread 0x7f5a6864d740 (most recent call first): File

[issue42587] test_buffer fails on Python built with GCC 11

New submission from STINNER Victor : PPC64LE Fedora Rawhide LTO 3.x: https://buildbot.python.org/all/#/builders/448/builds/433 FAIL: test_memoryview_cast (test.test_buffer.TestBufferProtocol) FAIL: test_memoryview_cast_1D_ND (test.test_buffer.TestBufferProtocol) FAIL: