[WIP] do something :-)

Source/core/layout/line/InlineTextBox.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 15 matching lines @@
 #include "core/layout/HitTestResult.h"
 #include "core/layout/LayoutBR.h"
 #include "core/layout/LayoutRubyText.h"
 #include "core/layout/api/LineLayoutBox.h"
 #include "core/layout/api/LineLayoutRubyRun.h"
 #include "core/layout/line/AbstractInlineTextBox.h"
 #include "core/layout/line/EllipsisBox.h"
 #include "core/paint/InlineTextBoxPainter.h"
 #include "platform/fonts/FontCache.h"
 #include "platform/fonts/shaping/SimpleShaper.h"
+#include "wtf/SizeAssertions.h"
 #include "wtf/Vector.h"
 #include "wtf/text/StringBuilder.h"
 
 #include <algorithm>
 
 namespace blink {
 
-struct SameSizeAsInlineTextBox : public InlineBox {
-    unsigned variables[1];
-    unsigned short variables2[2];
-    void* pointers[2];
-};
-
-static_assert(sizeof(InlineTextBox) == sizeof(SameSizeAsInlineTextBox), "InlineTextBox should stay small");
+ASSERT_SIZE(InlineTextBox, sizeof(InlineBox) + 16, sizeof(InlineBox) + 24);
 
 typedef WTF::HashMap<const InlineTextBox*, LayoutRect> InlineTextBoxOverflowMap;
 static InlineTextBoxOverflowMap* gTextBoxesWithOverflow;
 
 void InlineTextBox::destroy()
 {
     AbstractInlineTextBox::willDestroy(this);
 
     if (!knownToHaveNoOverflow() && gTextBoxesWithOverflow)
         gTextBoxesWithOverflow->remove(this);
@@ skipping 516 matching lines @@
     printedCharacters = fprintf(stderr, "\t%s %p", obj.name(), obj.debugPointer());
     const int layoutObjectCharacterOffset = 75;
     for (; printedCharacters < layoutObjectCharacterOffset; printedCharacters++)
         fputc(' ', stderr);
     fprintf(stderr, "(%d,%d) \"%s\"\n", start(), start() + len(), value.utf8().data());
 }
 
 #endif
 
 } // namespace blink