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bpo-36515: Disable unaligned memory access in _sha3 on ARM (GH-25927) 

Contributed-By: Matthias Klose

Automerge-Triggered-By: GH:tiran
This commit is contained in:
Gregory P. Smith 2021-05-05 13:55:33 -07:00 committed by GitHub
parent 565a31804c
commit da5c808fb5
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Misc/NEWS.d/next/Library/2021-05-05-11-44-49.bpo-36515.uOSa3q.rst Normal file
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The :mod:`hashlib` module no longer does unaligned memory accesses when
compiled for ARM platforms.

5
Modules/_sha3/sha3module.c
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@ -64,6 +64,11 @@
#define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
#endif
/* Prevent bus errors on platforms requiring aligned accesses such ARM. */
#if HAVE_ALIGNED_REQUIRED && !defined(NO_MISALIGNED_ACCESSES)
#define NO_MISALIGNED_ACCESSES
#endif
/* mangle names */
#define KeccakF1600_FastLoop_Absorb _PySHA3_KeccakF1600_FastLoop_Absorb
#define Keccak_HashFinal _PySHA3_Keccak_HashFinal