1.1 --- a/src/compiler/SemanticAnalysis.h	Sat Dec 22 16:42:20 2012 -0800
     1.2 +++ b/src/compiler/SemanticAnalysis.h	Sat Dec 22 18:22:14 2012 -0800
     1.3 @@ -88,6 +88,8 @@
     1.4          Coerce_Assign
     1.5      };
     1.6  
     1.7 +    void requireLifoStack();
     1.8 +    void visitLoopBody(Statement *stmt);
     1.9      void visitForTest(Expression *expr,
    1.10                        BytecodeEmitter::Label *trueBranch,
    1.11                        BytecodeEmitter::Label *falseBranch,
    1.12 @@ -114,6 +116,7 @@
    1.13          BytecodeEmitter::Label *ct_;
    1.14          LoopScope **prevp_;
    1.15          LoopScope *prev_;
    1.16 +        bool usesLifoStack_;
    1.17  
    1.18        public:
    1.19          LoopScope(Scope *scope, BytecodeEmitter::Label *bk, BytecodeEmitter::Label *ct,
    1.20 @@ -122,7 +125,8 @@
    1.21              bk_(bk),
    1.22              ct_(ct),
    1.23              prevp_(prevp),
    1.24 -            prev_(*prevp)
    1.25 +            prev_(*prevp),
    1.26 +            usesLifoStack_(false)
    1.27          {
    1.28              *prevp_ = this;
    1.29          }
    1.30 @@ -141,6 +145,12 @@
    1.31          Scope *scope() {
    1.32              return scope_;
    1.33          }
    1.34 +        void setUsesLifoStack() {
    1.35 +            usesLifoStack_ = true;
    1.36 +        }
    1.37 +        bool usesLifoStack() const {
    1.38 +            return usesLifoStack_;
    1.39 +        }
    1.40      };
    1.41      
    1.42    private: