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

	PR other/13906
	* ansidecl.h (ATTRIBUTE_ALIGNED_ALIGNOF): New.
	* md5.h (md5_uintptr): New.
	(md5_ctx): Align buffer field.

From-SVN: r101556

include/ChangeLog

+2005-07-03  Steve Ellcey  <sje@cup.hp.com>
+
+	PR other/13906
+	* ansidecl.h (ATTRIBUTE_ALIGNED_ALIGNOF): New.
+	* md5.h (md5_uintptr): New.
+	(md5_ctx): Align buffer field.
+
 2005-06-30  Daniel Berlin  <dberlin@dberlin.org>
 	
 	* hashtab.h (HTAB_DELETED_ENTRY): New macro.

include/ansidecl.h

@@ -352,6 +352,15 @@ So instead we use the macro below and test it against specific values.  */
 # endif /* GNUC >= 3.5 */
 #endif /* ATTRIBUTE_SENTINEL */
 
+
+#ifndef ATTRIBUTE_ALIGNED_ALIGNOF
+# if (GCC_VERSION >= 3000)
+#  define ATTRIBUTE_ALIGNED_ALIGNOF(m) __attribute__ ((__aligned__ (__alignof__ (m))))
+# else
+#  define ATTRIBUTE_ALIGNED_ALIGNOF(m)
+# endif /* GNUC >= 3.0 */
+#endif /* ATTRIBUTE_ALIGNED_ALIGNOF */
+
 /* We use __extension__ in some places to suppress -pedantic warnings
    about GCC extensions.  This feature didn't work properly before
    gcc 2.8.  */

include/md5.h

@@ -37,6 +37,7 @@
 #ifdef _LIBC
 # include <sys/types.h>
 typedef u_int32_t md5_uint32;
+typedef uintptr_t md5_uintptr;
 #else
 #  define INT_MAX_32_BITS 2147483647
 
@@ -64,6 +65,9 @@ typedef u_int32_t md5_uint32;
 #   endif
 #  endif
 # endif
+/* We have to make a guess about the integer type equivalent in size
+   to pointers which should always be correct.  */
+typedef unsigned long int md5_uintptr;
 #endif
 
 /* Structure to save state of computation between the single steps.  */
@@ -76,7 +80,7 @@ struct md5_ctx
 
   md5_uint32 total[2];
   md5_uint32 buflen;
-  char buffer[128];
+  char buffer[128] ATTRIBUTE_ALIGNED_ALIGNOF(md5_uint32);
 };
 
 /*