[Bug libstdc++/55993] tuple_cat not a constant expression for result size >= 3

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55993



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



           What    |Removed                     |Added

----------------------------------------------------------------------------

             Status|UNCONFIRMED                 |NEW

   Last reconfirmed|                            |2013-01-15

     Ever Confirmed|0                           |1



--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2013-01-15 
17:26:15 UTC ---

The problem is with 'get' not 'tuple_cat', the bug reduces to:



#include <tuple>

struct A {};

constexpr auto t = std::get<0>( std::make_tuple( A(), A() ) );