Rollback to Version 3.28.4 (based on bleeding_edge revision r22031)

src/variables.h

Index: src/variables.h
diff --git a/src/variables.h b/src/variables.h
index 58089b36ed9699463763c9681fbd2670c313f0a2..fdea0eedf1f240e3120763324d2a8bf3e68b4f43 100644
--- a/src/variables.h
+++ b/src/variables.h
@@ -82,9 +82,7 @@ class Variable: public ZoneObject {
     force_context_allocation_ = true;
   }
   bool is_used() { return is_used_; }
-  void set_is_used() { is_used_ = true; }
-  bool maybe_assigned() { return maybe_assigned_; }
-  void set_maybe_assigned() { maybe_assigned_ = true; }
+  void set_is_used(bool flag) { is_used_ = flag; }
 
   int initializer_position() { return initializer_position_; }
   void set_initializer_position(int pos) { initializer_position_ = pos; }
@@ -159,7 +157,6 @@ class Variable: public ZoneObject {
   // Usage info.
   bool force_context_allocation_;  // set by variable resolver
   bool is_used_;
-  bool maybe_assigned_;
   InitializationFlag initialization_flag_;
 
   // Module type info.