Upgrade AlignedMemory to support dynamic allocations.

base/memory/aligned_memory_unittest.cc

 // Copyright (c) 2011 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/memory/aligned_memory.h"
 #include "base/memory/scoped_ptr.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 #define EXPECT_ALIGNED(ptr, align) \
     EXPECT_EQ(0u, reinterpret_cast<uintptr_t>(ptr) & (align - 1))
 
 namespace {
 
 using base::AlignedMemory;
 
 TEST(AlignedMemoryTest, StaticAlignment) {
   static AlignedMemory<8, 8> raw8;
-  static AlignedMemory<8, 16> raw16;
-  static AlignedMemory<8, 256> raw256;
-  static AlignedMemory<8, 4096> raw4096;
+  static AlignedMemory<16, 8> raw16;
+  static AlignedMemory<256, 8> raw256;
+  static AlignedMemory<4096, 8> raw4096;
 
   EXPECT_EQ(8u, ALIGNOF(raw8));
   EXPECT_EQ(16u, ALIGNOF(raw16));
   EXPECT_EQ(256u, ALIGNOF(raw256));
   EXPECT_EQ(4096u, ALIGNOF(raw4096));
 
   EXPECT_ALIGNED(raw8.void_data(), 8);
   EXPECT_ALIGNED(raw16.void_data(), 16);
   EXPECT_ALIGNED(raw256.void_data(), 256);
   EXPECT_ALIGNED(raw4096.void_data(), 4096);
 }
 
 TEST(AlignedMemoryTest, StackAlignment) {
   AlignedMemory<8, 8> raw8;
-  AlignedMemory<8, 16> raw16;
-  AlignedMemory<8, 256> raw256;
-  AlignedMemory<8, 4096> raw4096;
+  AlignedMemory<16, 8> raw16;
+  AlignedMemory<256, 8> raw256;
+  AlignedMemory<4096, 8> raw4096;
 
   EXPECT_EQ(8u, ALIGNOF(raw8));
   EXPECT_EQ(16u, ALIGNOF(raw16));
   EXPECT_EQ(256u, ALIGNOF(raw256));
   EXPECT_EQ(4096u, ALIGNOF(raw4096));
 
   EXPECT_ALIGNED(raw8.void_data(), 8);
   EXPECT_ALIGNED(raw16.void_data(), 16);
   EXPECT_ALIGNED(raw256.void_data(), 256);
   EXPECT_ALIGNED(raw4096.void_data(), 4096);
 }
 
+TEST(AlignedMemoryTest, StackDynamicAllocation) {
+  AlignedMemory<8> raw8(8);
+  AlignedMemory<16> raw16(8);
+  AlignedMemory<256> raw256(8);
+  AlignedMemory<4096> raw4096(8);
+
+  EXPECT_TRUE(raw8.void_data());
+  EXPECT_ALIGNED(raw8.void_data(), 8);
+  EXPECT_TRUE(raw16.void_data());
+  EXPECT_ALIGNED(raw16.void_data(), 16);
+  EXPECT_TRUE(raw256.void_data());
+  EXPECT_ALIGNED(raw256.void_data(), 256);
+  EXPECT_TRUE(raw4096.void_data());
+  EXPECT_ALIGNED(raw4096.void_data(), 4096);
+}
+
 }  // namespace