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-rw-r--r--merge-ort.c4
-rwxr-xr-xt/t6429-merge-sequence-rename-caching.sh67
2 files changed, 71 insertions, 0 deletions
diff --git a/merge-ort.c b/merge-ort.c
index b346e23ff2..7b2c0e9ee2 100644
--- a/merge-ort.c
+++ b/merge-ort.c
@@ -3031,6 +3031,10 @@ static int detect_and_process_renames(struct merge_options *opt,
trace2_region_enter("merge", "regular renames", opt->repo);
detection_run |= detect_regular_renames(opt, MERGE_SIDE1);
detection_run |= detect_regular_renames(opt, MERGE_SIDE2);
+ if (renames->needed_limit) {
+ renames->cached_pairs_valid_side = 0;
+ renames->redo_after_renames = 0;
+ }
if (renames->redo_after_renames && detection_run) {
int i, side;
struct diff_filepair *p;
diff --git a/t/t6429-merge-sequence-rename-caching.sh b/t/t6429-merge-sequence-rename-caching.sh
index 035edc40b1..f2bc8a7d2a 100755
--- a/t/t6429-merge-sequence-rename-caching.sh
+++ b/t/t6429-merge-sequence-rename-caching.sh
@@ -697,4 +697,71 @@ test_expect_success 'caching renames only on upstream side, part 2' '
)
'
+#
+# The following testcase just creates two simple renames (slightly modified
+# on both sides but without conflicting changes), and a directory full of
+# files that are otherwise uninteresting. The setup is as follows:
+#
+# base: unrelated/<BUNCH OF FILES>
+# numbers
+# values
+# upstream: modify: numbers
+# modify: values
+# topic: add: unrelated/foo
+# modify: numbers
+# modify: values
+# rename: numbers -> sequence
+# rename: values -> progression
+#
+# This is a trivial rename case, but we're curious what happens with a very
+# low renameLimit interacting with the restart optimization trying to notice
+# that unrelated/ looks like a trivial merge candidate.
+#
+test_expect_success 'avoid assuming we detected renames' '
+ git init redo-weirdness &&
+ (
+ cd redo-weirdness &&
+
+ mkdir unrelated &&
+ for i in $(test_seq 1 10)
+ do
+ >unrelated/$i
+ done &&
+ test_seq 2 10 >numbers &&
+ test_seq 12 20 >values &&
+ git add numbers values unrelated/ &&
+ git commit -m orig &&
+
+ git branch upstream &&
+ git branch topic &&
+
+ git switch upstream &&
+ test_seq 1 10 >numbers &&
+ test_seq 11 20 >values &&
+ git add numbers &&
+ git commit -m "Some tweaks" &&
+
+ git switch topic &&
+
+ >unrelated/foo &&
+ test_seq 2 12 >numbers &&
+ test_seq 12 22 >values &&
+ git add numbers values unrelated/ &&
+ git mv numbers sequence &&
+ git mv values progression &&
+ git commit -m A &&
+
+ #
+ # Actual testing
+ #
+
+ git switch --detach topic^0 &&
+
+ test_must_fail git -c merge.renameLimit=1 rebase upstream &&
+
+ git ls-files -u >actual &&
+ ! test_file_is_empty actual
+ )
+'
+
test_done