list-objects.c: don't segfault for missing cmdline objects
When a command is invoked with both --exclude-promisor-objects,
--objects-edge-aggressive, and a missing object on the command line,
the rev_info.cmdline array could get a NULL pointer for the value of
an 'item' field. Prevent dereferencing of a NULL pointer in that
situation.
Properly handle --ignore-missing. If it is not passed, die when an
object is missing. Otherwise, just silently ignore it.
Signed-off-by: Matthew DeVore <matvore@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/revision.c b/revision.c
index b5108b7..07dc0e2 100644
--- a/revision.c
+++ b/revision.c
@@ -1717,6 +1717,8 @@ int handle_revision_arg(const char *arg_, struct rev_info *revs, int flags, unsi
if (!cant_be_filename)
verify_non_filename(revs->prefix, arg);
object = get_reference(revs, arg, &oid, flags ^ local_flags);
+ if (!object)
+ return revs->ignore_missing ? 0 : -1;
add_rev_cmdline(revs, object, arg_, REV_CMD_REV, flags ^ local_flags);
add_pending_object_with_path(revs, object, arg, oc.mode, oc.path);
free(oc.path);
