From: Christian Heimes <christian@python.org>
Date: Wed, 7 Sep 2016 10:42:47 +0000 (+0200)
Subject: Issue #16113: KeccakP-1600-opt64 does not support big endian platforms yet.
X-Git-Tag: v3.6.0b1~353
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=b205fe9791d780b0bdb88492eeaa71348e1d6957;p=thirdparty%2FPython%2Fcpython.git

Issue #16113: KeccakP-1600-opt64 does not support big endian platforms yet.
---

diff --git a/Modules/_sha3/sha3module.c b/Modules/_sha3/sha3module.c
index 67c69f2c85af..c236387fafd3 100644
--- a/Modules/_sha3/sha3module.c
+++ b/Modules/_sha3/sha3module.c
@@ -37,8 +37,11 @@
   /* opt64 uses un-aligned memory access that causes a BUS error with msg
    * 'invalid address alignment' on SPARC. */
   #define KeccakOpt 32
+#elif PY_BIG_ENDIAN
+  /* opt64 is not yet supported on big endian platforms */
+  #define KeccakOpt 32
 #elif SIZEOF_VOID_P == 8 && defined(PY_UINT64_T)
-  /* opt64 works only for 64bit platforms with unsigned int64 */
+  /* opt64 works only on little-endian 64bit platforms with unsigned int64 */
   #define KeccakOpt 64
 #else
   /* opt32 is used for the remaining 32 and 64bit platforms */