AIX: use intptr_t to cast a pointer

src/profiler/sampler.cc

 // Copyright 2013 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.
 
 #include "src/profiler/sampler.h"
 
 #if V8_OS_POSIX && !V8_OS_CYGWIN
 
 #define USE_SIGNALS
 
@@ skipping 715 matching lines @@
   // Implement Thread::Run().
   virtual void Run() {
     while (true) {
       {
         base::LockGuard<base::Mutex> lock_guard(mutex_);
 #if defined(USE_SIGNALS)
         if (thread_id_to_samplers_.Get().occupancy() == 0) break;
         if (SignalHandler::Installed()) {
           for (HashMap::Entry *p = thread_id_to_samplers_.Get().Start();
                p != NULL; p = thread_id_to_samplers_.Get().Next(p)) {
+#if V8_OS_AIX && V8_TARGET_ARCH_PPC64
+            // on AIX64, cannot cast (void *) to pthread_t which is
+            // of type unsigned int (4bytes)
+            pthread_t thread_id = reinterpret_cast<intptr_t>(p->key);
+#else
             pthread_t thread_id = reinterpret_cast<pthread_t>(p->key);
+#endif
             pthread_kill(thread_id, SIGPROF);
           }
         }
 #else
         if (active_samplers_.is_empty()) break;
         // When CPU profiling is enabled both JavaScript and C++ code is
         // profiled. We must not suspend.
         for (int i = 0; i < active_samplers_.length(); ++i) {
           Sampler* sampler = active_samplers_.at(i);
           if (!sampler->IsProfiling()) continue;
@@ skipping 306 matching lines @@
     SampleStack(state);
   }
   ResumeThread(profiled_thread);
 }
 
 #endif  // USE_SIGNALS
 
 
 }  // namespace internal
 }  // namespace v8