http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54859



Jonathan Wakely <redi at gcc dot gnu.org> changed:



           What    |Removed                     |Added

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           Keywords|                            |rejects-valid

                 CC|                            |redi at gcc dot gnu.org



--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-11-08 
15:08:15 UTC ---

template<unsigned N>

  using Num = int;



template<typename... Types>

  using Count = Num<sizeof...(Types)>;



Count<int, char, void> i;





This claims sizeof is not a constant:

e.C:5:37: error: integral expression 'sizeof (Types ...)' is not constant

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