rerere: fix crash with files rerere can't handle

diff --git a/t/t4200-rerere.sh b/t/t4200-rerere.sh
index eaf18c81cbffe012663fae3a537ef8302d6c7b31..23f9c0ca4503483428746188c5f8d0b9221b887f 100755 (executable)
--- a/t/t4200-rerere.sh
+++ b/t/t4200-rerere.sh
@@ -243,7 +243,7 @@ rerere_gc_custom_expiry_test () {
        five_days="$1" right_now="$2"
        test_expect_success "rerere gc with custom expiry ($five_days, $right_now)" '
                rm -fr .git/rr-cache &&
-               rr=.git/rr-cache/$_z40 &&
+               rr=.git/rr-cache/$ZERO_OID &&
                mkdir -p "$rr" &&
                >"$rr/preimage" &&
                >"$rr/postimage" &&
@@ -580,4 +580,25 @@ test_expect_success 'multiple identical conflicts' '
        count_pre_post 0 0
 '
 
+test_expect_success 'rerere with unexpected conflict markers does not crash' '
+       git reset --hard &&
+
+       git checkout -b branch-1 master &&
+       echo "bar" >test &&
+       git add test &&
+       git commit -q -m two &&
+
+       git reset --hard &&
+       git checkout -b branch-2 master &&
+       echo "foo" >test &&
+       git add test &&
+       git commit -q -a -m one &&
+
+       test_must_fail git merge branch-1 &&
+       echo "<<<<<<< a" >test &&
+       git rerere &&
+
+       git rerere clear
+'
+
 test_done