[PATCH] Resync libiberty sha1.c

[Mark Wielaard]

This brings in the following commit:

  commit f6e9c1c9191c8b9998e03cb15de8600a2a4b9188
  Author: Nick Clifton <nickc@redhat.com>
  Date:   Tue Mar 16 14:43:17 2021 +0000

    Fix potentially undefined behaviour when computing a sha1 value.

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

Signed-off-by: Mark Wielaard <mark@klomp.org>
---
 tools/sha1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/sha1.c b/tools/sha1.c
index e3d7f86..7d15d48 100644
--- a/tools/sha1.c
+++ b/tools/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;
     }
-- 
2.32.0