Allocate generator result objects before unwinding try handlers

src/full-codegen.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1212 matching lines @@
       --context_length;
     }
     StoreToFrameField(StandardFrameConstants::kContextOffset,
                       context_register());
   }
 
   __ jmp(current->AsBreakable()->break_label());
 }
 
 
-void FullCodeGenerator::VisitReturnStatement(ReturnStatement* stmt) {
-  Comment cmnt(masm_, "[ ReturnStatement");
-  SetStatementPosition(stmt);
-  Expression* expr = stmt->expression();
-  VisitForAccumulatorValue(expr);
-
-  // Exit all nested statements.
+void FullCodeGenerator::EmitUnwindBeforeReturn() {
   NestedStatement* current = nesting_stack_;
   int stack_depth = 0;
   int context_length = 0;
   while (current != NULL) {
     current = current->Exit(&stack_depth, &context_length);
   }
   __ Drop(stack_depth);
+}
 
+
+void FullCodeGenerator::VisitReturnStatement(ReturnStatement* stmt) {
+  Comment cmnt(masm_, "[ ReturnStatement");
+  SetStatementPosition(stmt);
+  Expression* expr = stmt->expression();
+  VisitForAccumulatorValue(expr);
+  EmitUnwindBeforeReturn();
   EmitReturnSequence();
 }
 
 
 void FullCodeGenerator::VisitWithStatement(WithStatement* stmt) {
   Comment cmnt(masm_, "[ WithStatement");
   SetStatementPosition(stmt);
 
   VisitForStackValue(stmt->expression());
   PushFunctionArgumentForContextAllocation();
@@ skipping 348 matching lines @@
   }
 
   return false;
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal