Fix printf formats

src/profiler/strings-storage.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_PROFILER_STRINGS_STORAGE_H_
 #define V8_PROFILER_STRINGS_STORAGE_H_
 
 #include "src/allocation.h"
+#include "src/base/compiler-specific.h"
 #include "src/hashmap.h"
 
 namespace v8 {
 namespace internal {
 
 // Provides a storage of strings allocated in C++ heap, to hold them
 // forever, even if they disappear from JS heap or external storage.
 class StringsStorage {
  public:
   explicit StringsStorage(Heap* heap);
   ~StringsStorage();
 
   const char* GetCopy(const char* src);
-  const char* GetFormatted(const char* format, ...);
+  PRINTF_FORMAT(2, 3) const char* GetFormatted(const char* format, ...);
+  PRINTF_FORMAT(2, 0)
   const char* GetVFormatted(const char* format, va_list args);
   const char* GetName(Name* name);
   const char* GetName(int index);
   const char* GetFunctionName(Name* name);
   const char* GetFunctionName(const char* name);
   size_t GetUsedMemorySize() const;
 
  private:
   static const int kMaxNameSize = 1024;
 
   static bool StringsMatch(void* key1, void* key2);
   const char* AddOrDisposeString(char* str, int len);
   HashMap::Entry* GetEntry(const char* str, int len);
 
   uint32_t hash_seed_;
   HashMap names_;
 
   DISALLOW_COPY_AND_ASSIGN(StringsStorage);
 };
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PROFILER_STRINGS_STORAGE_H_