Fix http://dartbug.com/1133:

vm/parser.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_PARSER_H_
 #define VM_PARSER_H_
 
 #include "include/dart_api.h"
 
 #include "vm/ast.h"
@@ skipping 155 matching lines @@
   void SkipStringLiteral();
   void SkipQualIdent();
 
   void CheckConstructorCallTypeArguments(
     intptr_t pos,
     Function& constructor,
     const AbstractTypeArguments& type_arguments);
 
   // Format an error or warning message into the message_buffer.
   // A null script means no source and a negative token_index means no position.
-  static void FormatMessage(const Script& script,
-                            intptr_t token_index,
-                            const char* message_header,
-                            char* message_buffer,
-                            intptr_t message_buffer_size,
-                            const char* format,
-                            va_list args);
+  static RawString* FormatMessage(const Script& script,
+                                  intptr_t token_index,
+                                  const char* message_header,
+                                  const char* format,
+                                  va_list args);
 
   // Reports error message at location of current token.
   void ErrorMsg(const char* msg, ...);
   void ErrorMsg(intptr_t token_index, const char* msg, ...);
   void Warning(const char* msg, ...);
   void Warning(intptr_t token_index, const char* msg, ...);
   void Unimplemented(const char* msg);
 
   const Instance& EvaluateConstExpr(AstNode* expr);
   void RunStaticFieldInitializer(const Field& field);
@@ skipping 262 matching lines @@
   // code at all points in the try block where an exit from the block is
   // done using 'return', 'break' or 'continue' statements.
   TryBlocks* try_blocks_list_;
 
   DISALLOW_COPY_AND_ASSIGN(Parser);
 };
 
 }  // namespace dart
 
 #endif  // VM_PARSER_H_