From affeef12fb2d10317fbcc7a866fbc3603cf16119 Mon Sep 17 00:00:00 2001
From: Martin Koegler <mkoegler@auto.tuwien.ac.at>
Date: Mon, 18 Feb 2008 08:31:54 +0100
Subject: deref_tag: handle return value NULL

Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 builtin-show-ref.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'builtin-show-ref.c')

diff --git a/builtin-show-ref.c b/builtin-show-ref.c
index 65051d14f..a323633e2 100644
--- a/builtin-show-ref.c
+++ b/builtin-show-ref.c
@@ -86,6 +86,9 @@ match:
 			    sha1_to_hex(sha1));
 		if (obj->type == OBJ_TAG) {
 			obj = deref_tag(obj, refname, 0);
+			if (!obj)
+				die("git-show-ref: bad tag at ref %s (%s)", refname,
+				    sha1_to_hex(sha1));
 			hex = find_unique_abbrev(obj->sha1, abbrev);
 			printf("%s %s^{}\n", hex, refname);
 		}
-- 
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