Use memmove instead of memcpy for overlapping areas

[thirdparty/git.git] / builtin-unpack-objects.c

diff --git a/builtin-unpack-objects.c b/builtin-unpack-objects.c
index e70a71163d18dff1dd182c0d0b02967044693884..74a90c1129d0ff2f772db937d6f9a0ac4e2589a4 100644 (file)
--- a/builtin-unpack-objects.c
+++ b/builtin-unpack-objects.c
@@ -22,7 +22,7 @@ static SHA_CTX ctx;
  * Make sure at least "min" bytes are available in the buffer, and
  * return the pointer to the buffer.
  */
-static void * fill(int min)
+static void *fill(int min)
 {
        if (min <= len)
                return buffer + offset;
@@ -30,7 +30,7 @@ static void * fill(int min)
                die("cannot fill %d bytes", min);
        if (offset) {
                SHA1_Update(&ctx, buffer, offset);
-               memcpy(buffer, buffer + offset, len);
+               memmove(buffer, buffer + offset, len);
                offset = 0;
        }
        do {