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))))