[3.9] bpo-46913: Fix test_ctypes, test_hashlib, test_faulthandler on UBSan (GH-31675) #31676
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Disable undefined behavior sanitizer (UBSAN) on
faulthandler_sigfpe().
(cherry picked from commit 4173d67)
Disable undefined behavior sanitizer (UBSan) on
faulthandler._read_null().
(cherry picked from commit 65b92cc)
If Python is built with UBSan, test_hashlib skips tests on the _sha3
extension which currently has undefined behaviors.
This change allows to run test_hashlib to check for new UBSan regression,
but the known _sha3 undefined behavior must be fixed.
(cherry picked from commit 6d0d7d2)
If Python is built with UBSan, test_ctypes now skips test_shorts().
This change allows to run test_ctypes to check for new UBSan regression,
but the known test_shorts() undefined behavior must be fixed.
(cherry picked from commit ad1b044)
(cherry picked from commit 7b5b429)