Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp2a/explicit5.C @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
---|---|
date | Thu, 13 Feb 2020 11:34:05 +0900 |
parents | |
children |
line wrap: on
line source
// P0892R2 // { dg-do compile } // { dg-options "-std=c++2a" } constexpr int fn0 () { return 0; } constexpr int fn1 () { return 1; } struct S0 { explicit(false) operator int(); explicit(1 == 0) operator double(); explicit(fn0()) operator char(); }; struct S1 { explicit(true) operator int(); explicit(1 == 1) operator double(); explicit(fn1()) operator char(); }; struct X { static const bool value = true; static constexpr bool foo () { return 1; } }; struct T { explicit(true ? 1 : throw 1) operator int(); explicit(true || true ? 1 : throw 1) operator double(); explicit(X::value) operator char(); explicit(X::foo ()) operator long(); }; struct W { constexpr operator bool() { return true; }; }; struct W2 { constexpr operator bool() { return false; }; }; struct U1 { explicit(W()) operator int(); }; struct U2 { explicit(W2()) operator int(); }; int main () { S0 s0; S1 s1; int i0 = s0; int i1 = s1; // { dg-error "cannot convert" } double d0 = s0; double d1 = s1; // { dg-error "cannot convert" } char c0 = s0; char c1 = s1; // { dg-error "cannot convert" } T t; int i2 = t; // { dg-error "cannot convert" } double d2 = t; // { dg-error "cannot convert" } char c2 = t; // { dg-error "cannot convert" } long l1 = t; // { dg-error "cannot convert" } U1 u1; int i3 = u1; // { dg-error "cannot convert" } U2 u2; int i4 = u2; }