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barraclough@apple.com authored
Change UString to use a 0 rep for null strings instead of a null object. Reviewed by Oliver Hunt. No performance impact. * JavaScriptCore.exp: * runtime/InternalFunction.cpp: (JSC::InternalFunction::InternalFunction): * runtime/JSString.h: (JSC::RopeBuilder::JSString): * runtime/UString.cpp: (JSC::initializeUString): * runtime/UString.h: (JSC::UString::UString): (JSC::UString::data): (JSC::UString::size): (JSC::UString::isNull): (JSC::UString::isEmpty): (JSC::UString::cost): git-svn-id: http://svn.webkit.org/repository/webkit/trunk@57055 268f45cc-cd09-0410-ab3c-d52691b4dbfc
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