2 // { dg-do compile { target c++11 } }
6 constexpr Foo(const Foo<N-1> a) : m_a(a) {}
7 constexpr Foo(const Foo<N> &a) : m_a(a.m_a) {}
12 template <> struct Foo<0> {};
14 constexpr Foo<1> catty1(Foo<1> x) { return x; }
15 constexpr Foo<2> catty2(Foo<1> x) { return Foo<2>(catty1(x)); }
17 constexpr auto res = catty2(Foo<1>(Foo<0>()));