Add compiler-specific "examine printf format" attributes to printfs.

base/trace_event.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/trace_event.h"
 
 #include "base/format_macros.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
@@ skipping 115 matching lines @@
 
 #ifdef USE_UNRELIABLE_NOW
   TimeTicks tick = TimeTicks::HighResNow();
 #else
   TimeTicks tick = TimeTicks::Now();
 #endif
   TimeDelta delta = tick - trace_start_time_;
   int64 usec = delta.InMicroseconds();
   std::string msg =
     StringPrintf("{'pid':'0x%lx', 'tid':'0x%lx', 'type':'%s', "
-                 "'name':'%s', 'id':'0x%lx', 'extra':'%s', 'file':'%s', "
+                 "'name':'%s', 'id':'%p', 'extra':'%s', 'file':'%s', "
                  "'line_number':'%d', 'usec_begin': %" PRId64 "},\n",
-                 base::GetCurrentProcId(),
-                 PlatformThread::CurrentId(),
+                 static_cast<unsigned long>(base::GetCurrentProcId()),
+                 static_cast<unsigned long>(PlatformThread::CurrentId()),
                  kEventTypeNames[type],
                  name.c_str(),
                  id,
                  extra.c_str(),
                  file,
                  line,
                  usec);
 
   Log(msg);
 }
 
 void TraceLog::Log(const std::string& msg) {
   AutoLock lock(file_lock_);
 
   fprintf(log_file_, "%s", msg.c_str());
 }
 
 } // namespace base