From b87841e1645f900fbec0a937a45f98b70b5684ca Mon Sep 17 00:00:00 2001
From: =?utf8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?=
 <pclouds@gmail.com>
Date: Wed, 25 Jul 2007 23:14:54 -0400
Subject: [PATCH] git-write-tree should not crash if prefix does not exist
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 builtin-write-tree.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/builtin-write-tree.c b/builtin-write-tree.c
index 391de5397..88f34ba7d 100644
--- a/builtin-write-tree.c
+++ b/builtin-write-tree.c
@@ -52,6 +52,8 @@ int write_tree(unsigned char *sha1, int missing_ok, const char *prefix)
 	if (prefix) {
 		struct cache_tree *subtree =
 			cache_tree_find(active_cache_tree, prefix);
+		if (!subtree)
+			die("git-write-tree: prefix %s not found", prefix);
 		hashcpy(sha1, subtree->sha1);
 	}
 	else
-- 
2.30.2