From 6a01554e6350123c78de805d820e90f1c56e5fdc Mon Sep 17 00:00:00 2001 From: Clemens Buchacher Date: Wed, 27 May 2009 22:13:43 +0200 Subject: [PATCH] fix segfault showing an empty remote In case of an empty list, the search for its tail caused a NULL-pointer dereference. Signed-off-by: Clemens Buchacher Reported-by: Erik Faye-Lund Acked-by: Jay Soffian Signed-off-by: Junio C Hamano --- builtin-remote.c | 8 ++++---- t/t5505-remote.sh | 10 ++++++++++ 2 files changed, 14 insertions(+), 4 deletions(-) diff --git a/builtin-remote.c b/builtin-remote.c index 71abf68404..fda9a54a0c 100644 --- a/builtin-remote.c +++ b/builtin-remote.c @@ -299,11 +299,11 @@ static int get_push_ref_states(const struct ref *remote_refs, return 0; local_refs = get_local_heads(); - ref = push_map = copy_ref_list(remote_refs); - while (ref->next) - ref = ref->next; - push_tail = &ref->next; + push_map = copy_ref_list(remote_refs); + push_tail = &push_map; + while (*push_tail) + push_tail = &((*push_tail)->next); match_refs(local_refs, push_map, &push_tail, remote->push_refspec_nr, remote->push_refspec, MATCH_REFS_NONE); diff --git a/t/t5505-remote.sh b/t/t5505-remote.sh index 5ec668d6d8..e70246b3fb 100755 --- a/t/t5505-remote.sh +++ b/t/t5505-remote.sh @@ -494,5 +494,15 @@ test_expect_success 'remote prune to cause a dangling symref' ' grep "dangling symref" err ' +test_expect_success 'show empty remote' ' + + test_create_repo empty && + git clone empty empty-clone && + ( + cd empty-clone && + git remote show origin + ) +' + test_done