merge-recursive: fix verbose output for multiple base trees

One of the indirect callers of make_virtual_commit() passes the result of
oid_to_hex() as the name, i.e. a pointer to a static buffer.  Since the
function uses that string pointer directly in building a struct
merge_remote_desc, multiple entries can end up sharing the same name
inadvertently.

Fix that by calling set_merge_remote_desc(), which creates a copy of the
string, instead of building the struct by hand.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/merge-recursive.c b/merge-recursive.c
index 65cb5d6c1f..a425077880 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -42,12 +42,9 @@ static struct tree *shift_tree_object(struct tree *one, struct tree *two,
 static struct commit *make_virtual_commit(struct tree *tree, const char *comment)
 {
 	struct commit *commit = alloc_commit_node();
-	struct merge_remote_desc *desc = xmalloc(sizeof(*desc));
 
-	desc->name = comment;
-	desc->obj = (struct object *)commit;
+	set_merge_remote_desc(commit, comment, (struct object *)commit);
 	commit->tree = tree;
-	commit->util = desc;
 	commit->object.parsed = 1;
 	return commit;
 }