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$NetBSD: patch-ah,v 1.1 2008/07/27 21:44:47 dholland Exp $
--- Main/Include/stack.h~ 2004-10-26 15:36:44.000000000 -0400
+++ Main/Include/stack.h 2008-07-27 16:28:11.000000000 -0400
@@ -56,7 +56,7 @@
stackiterator(stackslot* Slot) : Slot(Slot) { }
stackiterator& operator++() { Slot = Slot->Next; return *this; }
stackiterator& operator--() { Slot = Slot->Last; return *this; }
- truth HasItem() const { return truth(Slot); }
+ truth HasItem() const { return truth(Slot != NULL); }
item* operator->() const { return Slot->Item; }
item* operator*() const { return Slot->Item; }
const stackslot& GetSlot() const { return *Slot; }
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