https://bugs.webkit.org/show_bug.cgi?id=69188

Reviewed by Oliver Hunt.

0 is not the empty value on 32_64.
Code that casts literals to EncodedJSValues may be unsafe if we change our internal representation.

* runtime/ArrayPrototype.cpp:
(JSC::arrayProtoFuncToString):
(JSC::arrayProtoFuncToLocaleString):
(JSC::arrayProtoFuncJoin):
* runtime/ErrorPrototype.cpp:
(JSC::errorProtoFuncToString):
* runtime/RegExpPrototype.cpp:
(JSC::regExpProtoFuncToString):
* runtime/StringRecursionChecker.cpp:
(JSC::StringRecursionChecker::throwStackOverflowError):
(JSC::StringRecursionChecker::emptyString):
* runtime/StringRecursionChecker.h:
(JSC::StringRecursionChecker::performCheck):
(JSC::StringRecursionChecker::earlyReturnValue):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@96438 268f45cc-cd09-0410-ab3c-d52691b4dbfc