Add attributions so printf like functions can have their arguments checked.

runtime/vm/disassembler.h

 // Copyright (c) 2011, 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_DISASSEMBLER_H_
 #define VM_DISASSEMBLER_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 #include "vm/globals.h"
@@ skipping 29 matching lines @@
  public:
   DisassembleToStdout() : DisassemblyFormatter() { }
   ~DisassembleToStdout() { }
 
   virtual void ConsumeInstruction(char* hex_buffer,
                                   intptr_t hex_size,
                                   char* human_buffer,
                                   intptr_t human_size,
                                   uword pc);
 
-  virtual void Print(const char* format, ...);
+  virtual void Print(const char* format, ...) PRINTF_ATTRIBUTE(2, 3);
 
  private:
   DISALLOW_ALLOCATION()
   DISALLOW_COPY_AND_ASSIGN(DisassembleToStdout);
 };
 
 
 // Disassemble instructions.
 class Disassembler : public AllStatic {
  public:
@@ skipping 45 matching lines @@
                                uword pc);
 
  private:
   static const int kHexadecimalBufferSize = 32;
   static const int kUserReadableBufferSize = 256;
 };
 
 }  // namespace dart
 
 #endif  // VM_DISASSEMBLER_H_