Convert NULL to nullptr

util/synchronization/semaphore_test.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 21 matching lines @@
   pthread_t pthread;
   Semaphore* semaphore;
   size_t iterations;
 };
 
 void* ThreadMain(void* argument) {
   ThreadMainInfo* info = reinterpret_cast<ThreadMainInfo*>(argument);
   for (size_t iteration = 0; iteration < info->iterations; ++iteration) {
     info->semaphore->Wait();
   }
-  return NULL;
+  return nullptr;
 }
 
 TEST(Semaphore, Threaded) {
   Semaphore semaphore(0);
   ThreadMainInfo info;
   info.semaphore = &semaphore;
   info.iterations = 1;
 
-  int rv = pthread_create(&info.pthread, NULL, ThreadMain, &info);
+  int rv = pthread_create(&info.pthread, nullptr, ThreadMain, &info);
   ASSERT_EQ(0, rv) << "pthread_create";
 
   semaphore.Signal();
 
-  rv = pthread_join(info.pthread, NULL);
+  rv = pthread_join(info.pthread, nullptr);
   ASSERT_EQ(0, rv) << "pthread_join";
 }
 
 TEST(Semaphore, TenThreaded) {
   // This test has a smaller initial value (5) than threads contending for these
   // resources (10), and the threads each try to obtain the resource a different
   // number of times.
   Semaphore semaphore(5);
   const size_t kThreads = 10;
   ThreadMainInfo info[kThreads];
   size_t iterations = 0;
   int rv;
   for (size_t index = 0; index < kThreads; ++index) {
     info[index].semaphore = &semaphore;
     info[index].iterations = index;
     iterations += info[index].iterations;
 
-    rv = pthread_create(&info[index].pthread, NULL, ThreadMain, &info[index]);
+    rv =
+        pthread_create(&info[index].pthread, nullptr, ThreadMain, &info[index]);
     ASSERT_EQ(0, rv) << "pthread_create";
   }
 
   for (size_t iteration = 0; iteration < iterations; ++iteration) {
     semaphore.Signal();
   }
 
   for (size_t index = 0; index < kThreads; ++index) {
-    rv = pthread_join(info[index].pthread, NULL);
+    rv = pthread_join(info[index].pthread, nullptr);
     ASSERT_EQ(0, rv) << "pthread_join";
   }
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace crashpad