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view gcc/testsuite/g++.dg/cpp2a/concepts-requires20.C @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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// { dg-do compile { target c++2a } }

template<typename ...>
constexpr bool r () { return true; }

template<typename ... Ts>
  requires r<Ts...>() // { dg-error "enclose" }
void f() { }

template<typename T, T N>
  requires ++N // { dg-error "enclose" }
void f() { }

template<typename T, T N>
  requires N++ // { dg-error "enclose" }
void f() { }

template<typename T, T N>
  requires N == 0 // { dg-error "enclose" }
void f() { }

template<typename T, T N>
  requires N ? true : false // { dg-error "enclose" }
void f() { }

template<typename T, T N>
  requires N = 0 // { dg-error "enclose" }
void f() { }

template<typename T, T N>
  requires N + 1 // { dg-error "enclose" }
void f() { }

template<typename T, T N>
  requires N - 1 // { dg-error "enclose" }
void f() { }

template<typename T, T N>
  requires N.x // { dg-error "enclose" }
void f() { }

template<typename T, T N>
  requires N->x && true // { dg-error "enclose" }
void f() { }

template<typename T, T N>
  requires N && N
void f() { }

template<typename T, T N>
  requires N || N
void f() { }

template<typename T, T N>
  requires N || !N // { dg-error "enclose" }
void f() { }

template<typename T, T N>
  requires N[0] // { dg-error "enclose" }
void f() { }

template<typename T, T N>
  requires static_cast<bool>(N) // { dg-error "enclose" }
void f() { }