Don't lazily compile functions that are immediately receded by '('.

src/parser.h

 // Copyright 2010 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 664 matching lines @@
   TemporaryScope* temp_scope_;
   Mode mode_;
 
   Target* target_stack_;  // for break, continue statements
   bool allow_natives_syntax_;
   v8::Extension* extension_;
   bool is_pre_parsing_;
   ScriptDataImpl* pre_data_;
   FuncNameInferrer* fni_;
   bool stack_overflow_;
+  // If true, the next (and immediately following) function literal is
+  // preceded by a parenthesis.
+  // Heuristically that means that the function will be called immediately,
+  // so never lazily compile it.
+  bool parenthesized_function_;
 };
 
 
 // Support for handling complex values (array and object literals) that
 // can be fully handled at compile time.
 class CompileTimeValue: public AllStatic {
  public:
   enum Type {
     OBJECT_LITERAL_FAST_ELEMENTS,
     OBJECT_LITERAL_SLOW_ELEMENTS,
@@ skipping 71 matching lines @@
   Handle<Object> ReportUnexpectedToken() { return Handle<Object>::null(); }
   // Converts the currently parsed literal to a JavaScript String.
   Handle<String> GetString();
 
   JsonScanner scanner_;
   bool stack_overflow_;
 };
 } }  // namespace v8::internal
 
 #endif  // V8_PARSER_H_