Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/concepts/template-parm2.C @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 1830386684a0 |
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// { dg-do compile { target c++17_only } } // { dg-options "-fconcepts" } template<typename T> concept bool C1 = __is_same_as(T, int); template<int N> concept bool C2 = N == 0; template<template<typename> class X> concept bool C3 = false; template<typename> struct Foo; // Instantiation of default arguments happens at the point of // instantiation for the class. template<C1 T = char> struct S1 { }; template<C2 N = 1> struct S2 { }; template<C3 X = Foo> struct S3 { }; S1<> s1; // { dg-error "constraint failure|invalid type" } S2<> s2; // { dg-error "constraint failure|invalid type" } S3<> s3; // { dg-error "constraint failure|invalid type" }