gcc/testsuite/g++.dg/cpp1y/var-templ5.C

   1 // { dg-do run { target c++14 } }
   2
   3 template<int A, int B>
   4   struct S1
   5   {
   6     static constexpr int a = A;
   7     static constexpr int b = B;
   8   };
   9
  10 template<class T>
  11   constexpr int var = T::a + T::b;
  12
  13 template<template<int,int> class T, int A>
  14   constexpr int var2 = var<T<A, A>> + A;
  15
  16 int main ()
  17 {
  18   return !(
  19     var2<S1, 40> == 120
  20   );
  21 }