pack-objects: do not get distracted by broken symrefs

It is quite possible for, say, a remote HEAD to become broken, e.g. when the default branch was renamed. We should still be able to pack our objects when such a thing happens; simply ignore broken symrefs (because they cannot matter for the packing process anyway). This fixes https://github.com/git-for-windows/git/issues/423 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Johannes Schindelin committed Sep 28, 2015 at 16:01 UTC 14886b40c552d3ad4d5492d922948d76762af198
2 files changed +8 -2
reachable.c
+7 -1
@@ -24,9 +24,15 @@ static void update_progress(struct connectivity_progress *cp)
24
25 static int add_one_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data)
26 {
27 - struct object *object = parse_object_or_die(sha1, path);
27 struct rev_info *revs = (struct rev_info *)cb_data;
28 + struct object *object;
29
30 + if ((flag & REF_ISSYMREF) && (flag & REF_ISBROKEN)) {
31 + warning("symbolic ref is dangling: %s", path);
32 + return 0;
33 + }
34 +
35 + object = parse_object_or_die(sha1, path);
36 add_pending_object(revs, object, "");
37
38 return 0;
t/t6500-gc.sh
+1 -1
@@ -30,7 +30,7 @@ test_expect_success 'gc -h with invalid configuration' '
30 test_i18ngrep "[Uu]sage" broken/usage
31 '
32
33 -test_expect_failure 'gc is not aborted due to a stale symref' '
33 +test_expect_success 'gc is not aborted due to a stale symref' '
34 git init remote &&
35 (
36 cd remote &&