[PATCH 1/3] fix memcpy of overlapping area

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 <redacted>
---
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