diff options
Diffstat (limited to 'dev-lang/python/files/python-3.5.5-hash-unaligned.patch')
-rw-r--r-- | dev-lang/python/files/python-3.5.5-hash-unaligned.patch | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/dev-lang/python/files/python-3.5.5-hash-unaligned.patch b/dev-lang/python/files/python-3.5.5-hash-unaligned.patch deleted file mode 100644 index c418f40b7da4..000000000000 --- a/dev-lang/python/files/python-3.5.5-hash-unaligned.patch +++ /dev/null @@ -1,43 +0,0 @@ -The hash implementation casts the input pointer to uint64_t* and directly reads -from this, which may cause unaligned accesses. Use memcpy() instead so this code -will not crash with SIGBUS on sparc. - ---- a/Python/pyhash.c 2017-11-29 10:21:20.283094068 +0100 -+++ b/Python/pyhash.c 2017-11-29 10:24:26.733087813 +0100 -@@ -372,7 +372,7 @@ siphash24(const void *src, Py_ssize_t sr - PY_UINT64_T k0 = _le64toh(_Py_HashSecret.siphash.k0); - PY_UINT64_T k1 = _le64toh(_Py_HashSecret.siphash.k1); - PY_UINT64_T b = (PY_UINT64_T)src_sz << 56; -- const PY_UINT64_T *in = (PY_UINT64_T*)src; -+ const PY_UINT8_T *in = (PY_UINT8_T*)src; - - PY_UINT64_T v0 = k0 ^ 0x736f6d6570736575ULL; - PY_UINT64_T v1 = k1 ^ 0x646f72616e646f6dULL; -@@ -381,12 +381,14 @@ siphash24(const void *src, Py_ssize_t sr - - PY_UINT64_T t; - PY_UINT8_T *pt; -- PY_UINT8_T *m; -+ const PY_UINT8_T *m; - - while (src_sz >= 8) { -- PY_UINT64_T mi = _le64toh(*in); -- in += 1; -- src_sz -= 8; -+ PY_UINT64_T mi; -+ memcpy(&mi, in, sizeof(mi)); -+ mi = _le64toh(mi); -+ in += sizeof(mi); -+ src_sz -= sizeof(mi); - v3 ^= mi; - DOUBLE_ROUND(v0,v1,v2,v3); - v0 ^= mi; -@@ -394,7 +396,7 @@ siphash24(const void *src, Py_ssize_t sr - - t = 0; - pt = (PY_UINT8_T *)&t; -- m = (PY_UINT8_T *)in; -+ m = in; - switch (src_sz) { - case 7: pt[6] = m[6]; - case 6: pt[5] = m[5]; |