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comparison gcc/testsuite/g++.dg/concepts/alias4.C @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children 84e7813d76e9
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68:561a7518be6b 111:04ced10e8804
1 // { dg-options "-std=c++17 -fconcepts" }
2
3 template<typename T>
4 concept bool C() { return __is_class(T); }
5
6 template<typename T>
7 requires C<T>()
8 using X = T*;
9
10 // BUG: Alias templates are expanded at the point of use, regardless
11 // of whether or not they are dependent. This causes T* to be substituted
12 // without acutally checking the constraints.
13 template<typename T>
14 using Y = X<T>;
15
16 int main()
17 {
18 Y<int> y1; // { dg-error "" "" { xfail *-*-* } }
19 }