summary refs log tree commit diff
path: root/merge-ort.c
diff options
context:
space:
mode:
authorElijah Newren <newren@gmail.com>2021-12-28 00:20:46 +0000
committerJunio C Hamano <gitster@pobox.com>2021-12-30 10:40:26 -0800
commitd30126c20d5899f128facbd33ecf27163efe1326 (patch)
tree4aa9934f54b5c790ed7053645bd3f1efdce1200a /merge-ort.c
parente9d7761bb94f20acc98824275e317fa82436c25d (diff)
merge-ort: fix bug with renormalization and rename/delete conflicts
Ever since commit a492d5331c ("merge-ort: ensure we consult df_conflict
and path_conflicts", 2021-06-30), when renormalization is active AND a
file is involved in a rename/delete conflict BUT the file is unmodified
(either before or after renormalization), merge-ort was running into an
assertion failure.  Prior to that commit (or if assertions were compiled
out), merge-ort would mis-merge instead, ignoring the rename/delete
conflict and just deleting the file.

Remove the assertions, fix the code appropriately, leave some good
comments in the code, and add a testcase for this situation.

Reported-by: Ralf Thielow <ralf.thielow@gmail.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Reviewed-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'merge-ort.c')
-rw-r--r--merge-ort.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/merge-ort.c b/merge-ort.c
index 0342f10483..c319797021 100644
--- a/merge-ort.c
+++ b/merge-ort.c
@@ -3841,9 +3841,22 @@ static void process_entry(struct merge_options *opt,
 		if (opt->renormalize &&
 		    blob_unchanged(opt, &ci->stages[0], &ci->stages[side],
 				   path)) {
-			ci->merged.is_null = 1;
-			ci->merged.clean = 1;
-			assert(!ci->df_conflict && !ci->path_conflict);
+			if (!ci->path_conflict) {
+				/*
+				 * Blob unchanged after renormalization, so
+				 * there's no modify/delete conflict after all;
+				 * we can just remove the file.
+				 */
+				ci->merged.is_null = 1;
+				ci->merged.clean = 1;
+				 /*
+				  * file goes away => even if there was a
+				  * directory/file conflict there isn't one now.
+				  */
+				ci->df_conflict = 0;
+			} else {
+				/* rename/delete, so conflict remains */
+			}
 		} else if (ci->path_conflict &&
 			   oideq(&ci->stages[0].oid, &ci->stages[side].oid)) {
 			/*