Cannot overload nullptr_t with int, looser throw specification

[codemercenary]

This is because the "int" overload of this could potentially be called, as in the following circumstance:

Json myJson(NULL);

This creates a compiler error on Ubuntu gcc 4.8 due to the aforementioned potential ambiguity.

[codemercenary]

Nevermind, looks like there might be a GCC defect. Further investigation required.