Disable the fast top-level compiler for non-global declarations....

src/compiler.cc

 // Copyright 2009 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 628 matching lines @@
 
 void CodeGenSelector::VisitStatements(ZoneList<Statement*>* stmts) {
   for (int i = 0, len = stmts->length(); i < len; i++) {
     Visit(stmts->at(i));
     CHECK_BAILOUT;
   }
 }
 
 
 void CodeGenSelector::VisitDeclaration(Declaration* decl) {
-  if (decl->fun() != NULL) {
-    ProcessExpression(decl->fun(), Expression::kValue);
+  Variable* var = decl->proxy()->var();
+  if (!var->is_global() || var->mode() == Variable::CONST) {
+    BAILOUT("Non-global declaration");
   }
 }
 
 
 void CodeGenSelector::VisitBlock(Block* stmt) {
   VisitStatements(stmt->statements());
 }
 
 
 void CodeGenSelector::VisitExpressionStatement(ExpressionStatement* stmt) {
@@ skipping 442 matching lines @@
 
 void CodeGenSelector::VisitThisFunction(ThisFunction* expr) {
   BAILOUT("ThisFunction");
 }
 
 #undef BAILOUT
 #undef CHECK_BAILOUT
 
 
 } }  // namespace v8::internal