add_existing(): do not retain a reference to sha1

Its lifetime is not guaranteed, so make a copy. Free the memory when the string_list is cleared. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Michael Haggerty committed May 25, 2013 at 11:08 UTC f83918edcb6fbcd1c5d8378c11e57edcc47bd232
1 file changed +4 -3
builtin/fetch.c
+4 -3
@@ -571,7 +571,8 @@ static int add_existing(const char *refname, const unsigned char *sha1,
571 {
572 struct string_list *list = (struct string_list *)cbdata;
573 struct string_list_item *item = string_list_insert(list, refname);
574 - item->util = (void *)sha1;
574 + item->util = xmalloc(20);
575 + hashcpy(item->util, sha1);
576 return 0;
577 }
578
@@ -636,7 +637,7 @@ static void find_non_local_tags(struct transport *transport,
637 item = string_list_insert(&remote_refs, ref->name);
638 item->util = (void *)ref->old_sha1;
639 }
639 - string_list_clear(&existing_refs, 0);
640 + string_list_clear(&existing_refs, 1);
641
642 /*
643 * We may have a final lightweight tag that needs to be
@@ -782,7 +783,7 @@ static int do_fetch(struct transport *transport,
783 }
784
785 cleanup:
785 - string_list_clear(&existing_refs, 0);
786 + string_list_clear(&existing_refs, 1);
787 return retcode;
788 }
789