[PATCH 1/3] fix memcpy of overlapping area

[Jeff King <peff@peff.net>]

Caught by valgrind in t5500, but it is pretty obvious from
reading the code that this is shifting elements of an array
to the left, which needs memmove.

Signed-off-by: Jeff King <peff@peff.net>
---
This was introduced in f53514b (allow deepening of a shallow repository,
2006-10-30), released as part of v1.5.0. So probably 'maint'-worthy.

 commit.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/commit.c b/commit.c
index 632061c..731191e 100644
--- a/commit.c
+++ b/commit.c
@@ -224,7 +224,7 @@ int unregister_shallow(const unsigned char *sha1)
 	if (pos < 0)
 		return -1;
 	if (pos + 1 < commit_graft_nr)
-		memcpy(commit_graft + pos, commit_graft + pos + 1,
+		memmove(commit_graft + pos, commit_graft + pos + 1,
 				sizeof(struct commit_graft *)
 				* (commit_graft_nr - pos - 1));
 	commit_graft_nr--;
-- 
1.7.0.rc0.41.g538720