[patch libiberty]: Fix PR 54620
Kai Tietz
ktietz70@googlemail.com
Wed Jan 30 18:17:00 GMT 2013
Hi,
this patch fixes wrong handling of cases that bitness of size_t is
wider as 32-bit.
ChangeLog
2013-01-30 Kai Tietz <ktietz@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))))
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