gnu/packages/patches/python-3-arm-alignment.patch

   1 Ensure memory accesses in the sha3 module are aligned on ARM as it causes
   2 problems when running 32-bit code on a 64-bit kernel.
   3
   4 Patch taken from upstream bug report:
   5 https://bugs.python.org/issue36515
   6
   7 --- a/Modules/_sha3/sha3module.c
   8 +++ b/Modules/_sha3/sha3module.c
   9 @@ -64,6 +64,12 @@
  10  #define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
  11  #endif
  12
  13 +/* Bus error on 32-bit ARM due to un-aligned memory accesses; 64-bit ARM
  14 + * doesn't complain but un-aligned memory accesses are sub-optimal */
  15 +#if defined(__arm__) || defined(__aarch64__)
  16 +#define NO_MISALIGNED_ACCESSES
  17 +#endif
  18 +
  19  /* mangle names */
  20  #define KeccakF1600_FastLoop_Absorb _PySHA3_KeccakF1600_FastLoop_Absorb
  21  #define Keccak_HashFinal _PySHA3_Keccak_HashFinal