---

yaml
---
r: 63211
b: refs/heads/snap-stage3
c: 1175e94
h: refs/heads/master
i:
  63209: e3e91be
  63207: 37409db
v: v3

Author: bors

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: 2d28d645422c1617be58c8ca7ad9a457264ca850
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
-refs/heads/snap-stage3: da9172af60e04d40aad2f0184e81e2a74916eeba
+refs/heads/snap-stage3: 1175e94de3b6d0f6b35fd8de3599b29267f1adab
 refs/heads/try: 7b78b52e602bb3ea8174f9b2006bff3315f03ef9
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b

branches/snap-stage3/src/rt/rust_task.cpp

@@ -587,6 +587,7 @@ rust_task::cleanup_after_turn() {
 // stack and false otherwise.
 bool
 rust_task::new_big_stack() {
+    assert(stk);
     // If we have a cached big stack segment, use it.
     if (big_stack) {
         // Check to see if we're already on the big stack.
@@ -616,8 +617,7 @@ rust_task::new_big_stack() {
     if (big_stack->next)
         big_stack->next->prev = big_stack;
     big_stack->prev = stk;
-    if (stk)
-        stk->next = big_stack;
+    stk->next = big_stack;
 
     stk = big_stack;