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authorGregory P. Smith <greg@krypto.org>2021-05-05 20:55:33 (GMT)
committerGitHub <noreply@github.com>2021-05-05 20:55:33 (GMT)
commitda5c808fb50d34bc2e180d9481706072f33025da (patch)
tree305c183010edac7a9c4755288e16cc832c50d6bf /Modules/_sha3/sha3module.c
parent565a31804c1139fe7886f38af3b3923653b0c1b3 (diff)
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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
Diffstat (limited to 'Modules/_sha3/sha3module.c')
-rw-r--r--Modules/_sha3/sha3module.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/Modules/_sha3/sha3module.c b/Modules/_sha3/sha3module.c
index aba7f6d..3974e0b 100644
--- a/Modules/_sha3/sha3module.c
+++ b/Modules/_sha3/sha3module.c
@@ -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