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From: =?utf-8?q?Christian_G=C3=B6ttsche?= <cgzones@googlemail.com>
Date: Tue, 7 Dec 2021 13:01:10 +0100
Subject: md4/md5: disable optimization causing unaligned access
This restores unit tests with GCC 11 and LTO.
md5.c:92:23: warning: cast from 'const unsigned char *' to 'const uint32_t *' (aka 'const unsigned int *') increases required alignment from 1 to 4 [-Wcast-align]
STEP(F, a, b, c, d, SET(0), 0xd76aa478, 7)
~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
md5.c:51:4: note: expanded from macro 'SET'
(*(const uint32_t *)&ptr[(n) * 4])
^
md5.c:37:29: note: expanded from macro 'STEP'
(a) += f((b), (c), (d)) + (x) + (t); \
^
md5.c:92:3: runtime error: load of misaligned address 0x61900000008b for type 'const uint32_t' (aka 'const unsigned int'), which requires 4 byte alignment
0x61900000008b: note: pointer points here
41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41
^
---
src/lib/md4.c | 2 +-
src/lib/md5.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/lib/md4.c b/src/lib/md4.c
index 06e3231..798292a 100644
--- a/src/lib/md4.c
+++ b/src/lib/md4.c
@@ -42,7 +42,7 @@
* memory accesses is just an optimization. Nothing will break if it
* doesn't work.
*/
-#if defined(__i386__) || defined(__x86_64__) || defined(__vax__)
+#if 0 //defined(__i386__) || defined(__x86_64__) || defined(__vax__)
/* uint_fast32_t might be 64 bit, and thus may read 4 more bytes
* beyond the end of the buffer. So only read precisely 32 bits
*/
diff --git a/src/lib/md5.c b/src/lib/md5.c
index 6b5da6c..c605639 100644
--- a/src/lib/md5.c
+++ b/src/lib/md5.c
@@ -46,7 +46,7 @@
* memory accesses is just an optimization. Nothing will break if it
* doesn't work.
*/
-#if defined(__i386__) || defined(__x86_64__) || defined(__vax__)
+#if 0 //defined(__i386__) || defined(__x86_64__) || defined(__vax__)
#define SET(n) \
(*(const uint32_t *)&ptr[(n) * 4])
#define GET(n) \
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