From 6cbfa10eb5cc91e373681e2957d5b3f0b79ae57f Mon Sep 17 00:00:00 2001
From: Steve Ellcey <sje@cup.hp.com>
Date: Sun, 3 Jul 2005 15:40:29 +0000
Subject: [PATCH] re PR other/13906 (genmodes.c:964: internal compiler error:
Bus error in md5_process_block)
PR other/13906
* md5.c (md5_process_bytes): Check alignment.
From-SVN: r101557
---
libiberty/ChangeLog | 5 +++++
libiberty/md5.c | 17 +++++++++++++++++
2 files changed, 22 insertions(+)
diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index eb19aa71e4c0..ba575549ada7 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -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
diff --git a/libiberty/md5.c b/libiberty/md5.c
index c03a74dffa2c..83e0beb339fa 100644
--- a/libiberty/md5.c
+++ b/libiberty/md5.c
@@ -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;
--
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