[patch libiberty]: Fix PR 54620

[Kai Tietz]

Hi,

this patch fixes wrong handling of cases that bitness of size_t is
wider as 32-bit.

ChangeLog

2013-01-30  Kai Tietz  kti...@redhat.com

PR other/54620
* sha1.c (sha1_process_block):  Handle case that size_t is
a wider-integer-scalar as a 32-bit unsigned integer.

Tested for x86_64-unknown-linux-gnu, i686-pc-cygwin, and
x86_64-w64-mingw32.  Ok for apply?

Regards,
Kai

Index: sha1.c
===
--- sha1.c  (Revision 195578)
+++ sha1.c  (Arbeitskopie)
@@ -300,8 +300,7 @@ sha1_process_block (const void *buffer, size_t len
  length of the file up to 2^64 bits.  Here we only compute the
  number of bytes.  Do a double word increment.  */
   ctx-total[0] += len;
-  if (ctx-total[0]  len)
-++ctx-total[1];
+  ctx-total[1] += ((len  31)  1) + (ctx-total[0]  len);

 #define rol(x, n) (((x)  (n)) | ((sha1_uint32) (x)  (32 - (n

Re: [patch libiberty]: Fix PR 54620

[Ian Lance Taylor]

On Wed, Jan 30, 2013 at 9:45 AM, Kai Tietz ktiet...@googlemail.com wrote:

 2013-01-30  Kai Tietz  kti...@redhat.com

 PR other/54620
 * sha1.c (sha1_process_block):  Handle case that size_t is
 a wider-integer-scalar as a 32-bit unsigned integer.

This is OK.

Thanks.

Ian