Introduce String and AtomicString size check

Source/wtf/SizeLimits.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 19 matching lines @@
 
 #include "config.h"
 
 #include "wtf/Assertions.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
 #include "wtf/ThreadRestrictionVerifier.h"
 #include "wtf/Vector.h"
+#include "wtf/text/AtomicString.h"
+#include "wtf/text/WTFString.h"
 
 namespace WTF {
 
 #if !defined(NDEBUG) || SECURITY_ASSERT_ENABLED
 // The debug/assertion version may get bigger.
 struct SameSizeAsRefCounted {
     int a;
 #if SECURITY_ASSERT_ENABLED
     bool b;
 #endif
@@ skipping 21 matching lines @@
 template<typename T, unsigned inlineCapacity>
 struct SameSizeAsVectorWithInlineCapacity {
     SameSizeAsVectorWithInlineCapacity<T, 0> baseCapacity;
     AlignedBuffer<inlineCapacity * sizeof(T), WTF_ALIGN_OF(T)> inlineBuffer;
 };
 
 COMPILE_ASSERT(sizeof(OwnPtr<int>) == sizeof(int*), OwnPtr_should_stay_small);
 COMPILE_ASSERT(sizeof(PassRefPtr<RefCounted<int> >) == sizeof(int*), PassRefPtr_should_stay_small);
 COMPILE_ASSERT(sizeof(RefCounted<int>) == sizeof(SameSizeAsRefCounted), RefCounted_should_stay_small);
 COMPILE_ASSERT(sizeof(RefPtr<RefCounted<int> >) == sizeof(int*), RefPtr_should_stay_small);
+COMPILE_ASSERT(sizeof(String) == sizeof(int*), String_should_stay_small);
+COMPILE_ASSERT(sizeof(AtomicString) == sizeof(String), AtomicString_should_stay_small);

[abarth-chromium, 2014/03/21 17:12:22]

We already have this compile assert somewhere else, but having it here too is
fine.

 COMPILE_ASSERT(sizeof(Vector<int>) == sizeof(SameSizeAsVectorWithInlineCapacity<int>), Vector_should_stay_small);
 COMPILE_ASSERT(sizeof(Vector<int, 1>) == sizeof(SameSizeAsVectorWithInlineCapacity<int, 1>), Vector_should_stay_small);
 COMPILE_ASSERT(sizeof(Vector<int, 2>) == sizeof(SameSizeAsVectorWithInlineCapacity<int, 2>), Vector_should_stay_small);
 COMPILE_ASSERT(sizeof(Vector<int, 3>) == sizeof(SameSizeAsVectorWithInlineCapacity<int, 3>), Vector_should_stay_small);
 }