From 12203a76c22cebff394a2b157a0d1f4cec3d46f8 Mon Sep 17 00:00:00 2001
From: Ron Dahlgren <ronald.dahlgren@gmail.com>
Date: Sat, 8 Jun 2013 22:16:14 -0700
Subject: Check stk before dereferencing

This commit fixes #7022 - I've added an additional check to ensure that
stk is not null before dereferencing it to get it's next element,
assigning NULL if it is itself NULL.
---
 src/rt/rust_task.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/rt/rust_task.cpp')

diff --git a/src/rt/rust_task.cpp b/src/rt/rust_task.cpp
index b5ecb166175..c521feae72f 100644
--- a/src/rt/rust_task.cpp
+++ b/src/rt/rust_task.cpp
@@ -612,7 +612,7 @@ rust_task::new_big_stack() {
     }
 
     big_stack->task = this;
-    big_stack->next = stk->next;
+    big_stack->next = stk ? stk->next : NULL;
     if (big_stack->next)
         big_stack->next->prev = big_stack;
     big_stack->prev = stk;
-- 
cgit 1.4.1-3-g733a5