[Webkit-unassigned] [Bug 52983] Eliminate m_tagHistory pointer from CSSSelector

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=52983





--- Comment #5 from Antti Koivisto <koivisto at iki.fi>  2011-01-24 20:10:48 PST ---
> > Source/WebCore/css/CSSSelectorList.cpp:70
> > +            memcpy(&m_selectorArray[arrayIndex], selector, sizeof(CSSSelector));
> 
> It’s dangerous to move a CSSSelector this way unless the class knows about it; some classes have pointers into themselves or other such things. If we really need this move operation, we should make a function member of the CSSSelector class to do the work. That makes it more likely that someone changing CSSSelector around won’t invalidate this operation. We can just name the function move or moveIntoUninitializedMemory or something like that and make it either a member function or static member function.

I left this as is for now as CSSSelectorList and CSSSelector are already very tightly coupled.

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