Fix lazy parsing heuristics to respect outer scope.

src/parser.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 4503 matching lines @@
       VariableProxy* proxy = factory()->NewVariableProxy(fvar);
       VariableDeclaration* fvar_declaration =
           factory()->NewVariableDeclaration(proxy, fvar_mode, top_scope_);
       top_scope_->DeclareFunctionVar(fvar_declaration);
     }
 
     // Determine whether the function will be lazily compiled.
     // The heuristics are:
     // - It must not have been prohibited by the caller to Parse (some callers
     //   need a full AST).
+    // - The outer scope must allow lazy compilation of inner functions.
     // - The function mustn't be a function expression with an open parenthesis
     //   before; we consider that a hint that the function will be called
     //   immediately, and it would be a waste of time to make it lazily
     //   compiled.
     // These are all things we can know at this point, without looking at the
     // function itself.
     bool is_lazily_compiled = (mode() == PARSE_LAZILY &&
+                               top_scope_->AllowsLazyCompilation() &&
                                !parenthesized_function_);
     parenthesized_function_ = false;  // The bit was set for this function only.
 
     if (is_lazily_compiled) {
       int function_block_pos = scanner().location().beg_pos;
       FunctionEntry entry;
       if (pre_data_ != NULL) {
         // If we have pre_data_, we use it to skip parsing the function body.
         // the preparser data contains the information we need to construct the
         // lazy function.
@@ skipping 1521 matching lines @@
       ASSERT(info->isolate()->has_pending_exception());
     } else {
       result = parser.ParseProgram();
     }
   }
   info->SetFunction(result);
   return (result != NULL);
 }
 
 } }  // namespace v8::internal