Use C++11 alignment primitives

base/memory/singleton_unittest.cc

 // Copyright (c) 2012 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 <stdint.h>
 
 #include "base/at_exit.h"
 #include "base/memory/singleton.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 namespace {
 
 static_assert(DefaultSingletonTraits<int>::kRegisterAtExit == true,
               "object must be deleted on process exit");
 
 typedef void (*CallbackFunc)();
 
+template <size_t alignment>
+class AlignedData {
+ public:
+  AlignedData() {}
+  ~AlignedData() {}
+  alignas(alignment) char data_[alignment];
+};
+
 class IntSingleton {
  public:
   static IntSingleton* GetInstance() {
     return Singleton<IntSingleton>::get();
   }
 
   int value_;
 };
 
 class Init5Singleton {
@@ skipping 233 matching lines @@
     }
   }
   // The leaky singleton shouldn't leak since SingletonLeak has not been called.
   VerifiesCallbacksNotCalled();
 }
 
 #define EXPECT_ALIGNED(ptr, align) \
     EXPECT_EQ(0u, reinterpret_cast<uintptr_t>(ptr) & (align - 1))
 
 TEST_F(SingletonTest, Alignment) {
-  using base::AlignedMemory;
-
   // Create some static singletons with increasing sizes and alignment
   // requirements. By ordering this way, the linker will need to do some work to
   // ensure proper alignment of the static data.
   AlignedTestSingleton<int32_t>* align4 =
       AlignedTestSingleton<int32_t>::GetInstance();
-  AlignedTestSingleton<AlignedMemory<32, 32> >* align32 =
-      AlignedTestSingleton<AlignedMemory<32, 32> >::GetInstance();
-  AlignedTestSingleton<AlignedMemory<128, 128> >* align128 =
-      AlignedTestSingleton<AlignedMemory<128, 128> >::GetInstance();
-  AlignedTestSingleton<AlignedMemory<4096, 4096> >* align4096 =
-      AlignedTestSingleton<AlignedMemory<4096, 4096> >::GetInstance();
+  AlignedTestSingleton<AlignedData<32>>* align32 =
+      AlignedTestSingleton<AlignedData<32>>::GetInstance();
+  AlignedTestSingleton<AlignedData<128>>* align128 =
+      AlignedTestSingleton<AlignedData<128>>::GetInstance();
+  AlignedTestSingleton<AlignedData<4096>>* align4096 =
+      AlignedTestSingleton<AlignedData<4096>>::GetInstance();
 
   EXPECT_ALIGNED(align4, 4);
   EXPECT_ALIGNED(align32, 32);
   EXPECT_ALIGNED(align128, 128);
   EXPECT_ALIGNED(align4096, 4096);
 }
 
 }  // namespace
 }  // namespace base