From 7b27f001862cfd17fb8778151bc709daad5740a0 Mon Sep 17 00:00:00 2001
From: vda <vda@69ca8d6d-28ef-0310-b511-8ec308f3f277>
Date: Tue, 13 Mar 2007 20:55:36 +0000
Subject: ash: popstackmark is reported trying to pop until NULL is seen (which
 isn't possible), prevent this.

git-svn-id: svn://busybox.net/trunk/busybox@18087 69ca8d6d-28ef-0310-b511-8ec308f3f277
---
 shell/ash.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'shell')

diff --git a/shell/ash.c b/shell/ash.c
index bfa4a8c6d..29156c199 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -1216,6 +1216,9 @@ popstackmark(struct stackmark *mark)
 {
 	struct stack_block *sp;
 
+	if (!mark->stackp)
+		return;
+
 	INT_OFF;
 	markp = mark->marknext;
 	while (stackp != mark->stackp) {
-- 
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