diff.c: do not use pathname comparison to tell renames

The final output from diff used to compare pathnames between
preimage and postimage to tell if the filepair is a rename/copy.
By explicitly marking the filepair created by diffcore_rename(),
the output routine, resolve_rename_copy(), does not have to do
so anymore.  This helps feeding a filepair that has different
pathnames in one and two elements to the diff machinery (most
notably, comparing two blobs).

Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 1 insertions, 5 deletions

diff --git a/diff.c b/diff.c
index 607c357f5..895c13765 100644
--- a/diff.c
+++ b/diff.c
@@ -1786,13 +1786,9 @@ struct diff_filepair *diff_queue(struct diff_queue_struct *queue,
 				 struct diff_filespec *one,
 				 struct diff_filespec *two)
 {
-	struct diff_filepair *dp = xmalloc(sizeof(*dp));
+	struct diff_filepair *dp = xcalloc(1, sizeof(*dp));
 	dp->one = one;
 	dp->two = two;
-	dp->score = 0;
-	dp->status = 0;
-	dp->source_stays = 0;
-	dp->broken_pair = 0;
 	if (queue)
 		diff_q(queue, dp);
 	return dp;