Make the placement-new buffer in LazyInstance<Type> aligned.

base/logging.h

 // 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.
 
 #ifndef BASE_LOGGING_H_
 #define BASE_LOGGING_H_
 #pragma once
 
 #include <cassert>
 #include <string>
@@ skipping 698 matching lines @@
 // and the other is NULL. To work around this, simply static_cast NULL to the
 // type of the desired pointer.
 
 #define DCHECK_EQ(val1, val2) DCHECK_OP(EQ, ==, val1, val2)
 #define DCHECK_NE(val1, val2) DCHECK_OP(NE, !=, val1, val2)
 #define DCHECK_LE(val1, val2) DCHECK_OP(LE, <=, val1, val2)
 #define DCHECK_LT(val1, val2) DCHECK_OP(LT, < , val1, val2)
 #define DCHECK_GE(val1, val2) DCHECK_OP(GE, >=, val1, val2)
 #define DCHECK_GT(val1, val2) DCHECK_OP(GT, > , val1, val2)
 
+#define DCHECK_ALIGNED(ptr) \

[willchan no longer on Chromium, 2011/10/21 16:10:42]

I don't think we need to add this into logging.h. I don't think many places will
use it.

+    DCHECK_EQ(reinterpret_cast<uintptr_t>((ptr)) % sizeof((ptr)), 0u)
+
 #define NOTREACHED() DCHECK(false)
 
 // Redefine the standard assert to use our nice log files
 #undef assert
 #define assert(x) DLOG_ASSERT(x)
 
 // This class more or less represents a particular log message.  You
 // create an instance of LogMessage and then stream stuff to it.
 // When you finish streaming to it, ~LogMessage is called and the
 // full message gets streamed to the appropriate destination.
@@ skipping 222 matching lines @@
 namespace base {
 
 class StringPiece;
 
 // Allows StringPiece to be logged.
 BASE_EXPORT std::ostream& operator<<(std::ostream& o, const StringPiece& piece);
 
 }  // namespace base
 
 #endif  // BASE_LOGGING_H_