mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-09-27 10:50:04 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 13

[3.9] bpo-36515: Disable unaligned memory access in _sha3 on ARM (GH-25927) (GH-25928)

Browse source 
Contributed-By: Matthias Klose

Automerge-Triggered-By: GH:tiran
(cherry picked from commit da5c808fb5)

Co-authored-by: Gregory P. Smith <greg@krypto.org>

Co-authored-by: Gregory P. Smith <greg@krypto.org>
This commit is contained in:
Miss Islington (bot) 2021-05-05 23:55:35 -07:00 • committed by GitHub
parent ea93270366
commit ce47addfb6
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
2 changed files with 7 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

2
Misc/NEWS.d/next/Library/2021-05-05-11-44-49.bpo-36515.uOSa3q.rst Normal file
View file

@ -0,0 +1,2 @@
The :mod:`hashlib` module no longer does unaligned memory accesses when
compiled for ARM platforms.

5
Modules/_sha3/sha3module.c
View file

@ -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