gh-133157: remove use of _Py_NO_SANITIZE_UNDEFINED in faulthandler
#134047
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- reading from NULL is no more an undefined behavior for C11 - instead of using 1/0 arithmetic, we explicitly raise SIGFPE
vstinner
reviewed
May 15, 2025
vstinner
reviewed
May 15, 2025
picnixz
commented
May 15, 2025
Reading from NULL is an undefined behavior and `faulthandler` should not check for low-level C about undefined behaviors.
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Should I actually add a NEWS entry? the function was not documented but it had a docstring. |
It doesn't need a NEWS entry since it's a private function written for test_faulthandler. |
Pranjal095
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Jul 12, 2025
…thandler` (python#134047) In `faulthandler_sigfpe()`, instead of using 1/0 arithmetic, we explicitly raise SIGFPE. We also remove `faulthandler._read_null()` since reading from NULL is an undefined behavior and `faulthandler` should not check for low-level C undefined behaviors.
taegyunkim
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Aug 4, 2025
…thandler` (python#134047) In `faulthandler_sigfpe()`, instead of using 1/0 arithmetic, we explicitly raise SIGFPE. We also remove `faulthandler._read_null()` since reading from NULL is an undefined behavior and `faulthandler` should not check for low-level C undefined behaviors.
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_read_null()as it's a tricky one (and the compiler didn't seem to complain)