Fix potentially undefined behaviour when computing a sha1 value.

libiberty/
	* sha1.c (sha1_process_bytes): Use memmove in place of memcpy.

diff --git a/libiberty/sha1.c b/libiberty/sha1.c
index e3d7f86..7d15d48 100644 (file)
--- a/libiberty/sha1.c
+++ b/libiberty/sha1.c
@@ -258,7 +258,7 @@ sha1_process_bytes (const void *buffer, size_t len, struct sha1_ctx *ctx)
        {
          sha1_process_block (ctx->buffer, 64, ctx);
          left_over -= 64;
-         memcpy (ctx->buffer, &ctx->buffer[16], left_over);
+         memmove (ctx->buffer, &ctx->buffer[16], left_over);
        }
       ctx->buflen = left_over;
     }