Generally, if you want a decltype(nullptr)-based overload, you should use SFINAE and IsNullPointer. (Examples are provided in NullPtr.h comments.) The problem is NullptrT matches far more than just __null as emulated nullptr for gcc 4.4/4.5 overloading purposes. This problem is unavoidable without true nullptr. Currently, the only valid use for NullptrT is believed to be in operator overloads. All existing nullptr-overloading code has been rewritten to use the appropriate technique for the situation, and MOZ_HAVE_CXX11_NULLPTR is no longer an API.
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extra : rebase_source : 01abfcb66ae569db7b04a7b53f5cd5fd8151bffd
