2 // { dg-additional-options -std=c++17 }
5 constexpr operator int() { return true; }
7 template <typename T, typename U> constexpr bool m = true;
8 template <long L> struct C { typedef double q; };
11 using ar = typename C<i>::q;
13 using as = typename C<j>::q;
14 if constexpr (m<ar, as>) {}