upload-pack: add get_reachable_list()

diff --git a/t/t1401-symbolic-ref.sh b/t/t1401-symbolic-ref.sh
index ce8b4f4d0f375fb49afdb80d002559464a5b2812..417eecc3af2a30c3544ddd2f83b7ccecc540eaf1 100755 (executable)
--- a/t/t1401-symbolic-ref.sh
+++ b/t/t1401-symbolic-ref.sh
@@ -114,4 +114,19 @@ test_expect_success 'symbolic-ref writes reflog entry' '
        test_cmp expect actual
 '
 
+test_expect_success 'symbolic-ref does not create ref d/f conflicts' '
+       git checkout -b df &&
+       test_commit df &&
+       test_must_fail git symbolic-ref refs/heads/df/conflict refs/heads/df &&
+       git pack-refs --all --prune &&
+       test_must_fail git symbolic-ref refs/heads/df/conflict refs/heads/df
+'
+
+test_expect_success 'symbolic-ref handles existing pointer to invalid name' '
+       head=$(git rev-parse HEAD) &&
+       git symbolic-ref HEAD refs/heads/outer &&
+       git update-ref refs/heads/outer/inner $head &&
+       git symbolic-ref HEAD refs/heads/unrelated
+'
+
 test_done