BUG: Fixes for Undefined Behavior Sanitizer (UBSan) errors. #14043
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charris
added
00 - Bug
component: numpy._core
08 - Backport
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Backport of #13590 .
When I build numpy 1.16.3 with
clang version 7.0.0 (tags/RELEASE_700/final)and-fsanitize=undefined, I got 2 runtime error:numpy/core/src/multiarray/dragon4.c:877:36: runtime error: left shift of 1 by 31 places cannot be represented in type 'int'numpy/core/src/umath/reduction.c:57:19: runtime error: null pointer passed as argument 2, which is declared to never be null