t4200: demonstrate rerere segfault on specially crafted merge

diff --git a/t/t4200-rerere.sh b/t/t4200-rerere.sh
index d97d2bebc9850c8ba96a8263ed081fced2ecc153..ed9e495fa75c0f7b650e9065fed70c4330d7886c 100755 (executable)
--- a/t/t4200-rerere.sh
+++ b/t/t4200-rerere.sh
@@ -580,4 +580,33 @@ test_expect_success 'multiple identical conflicts' '
        count_pre_post 0 0
 '
 
+test_expect_success 'setup simple stage 1 handling' '
+       test_create_repo stage_1_handling &&
+       (
+               cd stage_1_handling &&
+
+               test_seq 1 10 >original &&
+               git add original &&
+               git commit -m original &&
+
+               git checkout -b A master &&
+               git mv original A &&
+               git commit -m "rename to A" &&
+
+               git checkout -b B master &&
+               git mv original B &&
+               git commit -m "rename to B"
+       )
+'
+
+test_expect_failure 'test simple stage 1 handling' '
+       (
+               cd stage_1_handling &&
+
+               git config rerere.enabled true &&
+               git checkout A^0 &&
+               test_must_fail git merge B^0
+       )
+'
+
 test_done