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re PR other/13906 (genmodes.c:964: internal compiler error: Bus error in md5_process_block)

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PR other/13906
	* md5.c (md5_process_bytes): Check alignment.

From-SVN: r101557
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Steve Ellcey 2005-07-03 15:40:29 +00:00 committed by Steve Ellcey
parent 3fe725de2a
commit 6cbfa10eb5
2 changed files with 22 additions and 0 deletions
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5
libiberty/ChangeLog
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@ -1,3 +1,8 @@
2005-07-03 Steve Ellcey <sje@cup.hp.com>
PR other/13906
* md5.c (md5_process_bytes): Check alignment.
2005-07-01 Ian Lance Taylor <ian@airs.com>
PR other/22268

17
libiberty/md5.c
View File

@ -223,6 +223,23 @@ md5_process_bytes (const void *buffer, size_t len, struct md5_ctx *ctx)
/* Process available complete blocks. */
if (len > 64)
{
#if !_STRING_ARCH_unaligned
/* To check alignment gcc has an appropriate operator. Other
compilers don't. */
# if __GNUC__ >= 2
# define UNALIGNED_P(p) (((md5_uintptr) p) % __alignof__ (md5_uint32) != 0)
# else
# define UNALIGNED_P(p) (((md5_uintptr) p) % sizeof (md5_uint32) != 0)
# endif
if (UNALIGNED_P (buffer))
while (len > 64)
{
md5_process_block (memcpy (ctx->buffer, buffer, 64), 64, ctx);
buffer = (const char *) buffer + 64;
len -= 64;
}
else
#endif
md5_process_block (buffer, len & ~63, ctx);
buffer = (const void *) ((const char *) buffer + (len & ~63));
len &= 63;