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comparison gcc/testsuite/g++.dg/cpp2a/concepts-pr67070.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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131:84e7813d76e9 145:1830386684a0
1 // { dg-do compile { target c++2a } }
2
3 template <class T>
4 concept C1 =
5 requires { typename T::type; } && T::type::value;
6
7 template <class T>
8 concept C2 =
9 requires {
10 typename T::Type;
11 requires T::Type::value;
12 };
13
14 template <class T>
15 requires (!C1<T>)
16 void f1() { }
17
18 template <class T>
19 requires (!C2<T>)
20 void f2() { }
21
22 struct S { };
23
24 void test()
25 {
26 f1<S>();
27 f2<S>();
28 }
29
30 // ------------------
31
32
33 template<typename T>
34 concept C = requires (T t) { t.f(); };
35
36 template<typename A, typename B>
37 requires (!(C<A> && C<B>))
38 void g1() { }
39
40 template<typename A, typename B>
41 requires (!C<A> || !C<B>)
42 void g2() { }
43
44 struct X {
45 void f();
46 };
47
48 void test2() {
49 g1<X, X>(); // { dg-error "" }
50 g2<X, X>(); // { dg-error "" }
51 }