view gcc/testsuite/g++.dg/cpp0x/constexpr-non-const-arg.C @ 131:84e7813d76e9

gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children
line wrap: on
line source

// Example from issue 1125 drafting; D() and v were well-formed with the
// wording approved in Rapperswil, now seems they should be ill-formed.
// { dg-do compile { target c++11 } }

struct B {
  constexpr B(int x) : i(0) { }    // "x" is unused
  int i;
};

int global;			// { dg-message "not const" }

struct D : B {
  constexpr D() : B(global) { }   // { dg-error "global|argument" }
};

struct A2 {
  constexpr A2(bool b, int x) : m(b ? 42 : x) { }
  int m;
};

// ok, constructor call initializes m with the value 42 after substitution
constexpr int v = A2(true, global).m; // { dg-error "global" }
// error: initializer for m is "x", which is non-constant
constexpr int w = A2(false, global).m; // { dg-error "global" }