blob: 863b608b5b75ca41598f4a849840cafffc948b2c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
// RUN: %clang_cc1 -std=c++14 -fconcepts-ts -fcxx-exceptions -x c++ -verify %s
namespace A {
template<typename T> concept bool C1() { return true; }
template<typename T> concept bool C2 = true;
}
template<typename T> concept bool C3() { return (throw 0, true); }
static_assert(noexcept(C3<int>()), "function concept should be treated as if noexcept(true) specified");
template<typename T> concept bool D1(); // expected-error {{function concept declaration must be a definition}}
struct B {
template<typename T> concept bool D2() { return true; } // expected-error {{concept declarations may only appear in namespace scope}}
};
struct C {
template<typename T> static concept bool D3 = true; // expected-error {{concept declarations may only appear in namespace scope}}
};
concept bool D4() { return true; } // expected-error {{'concept' can only appear on the definition of a function template or variable template}}
concept bool D5 = true; // expected-error {{'concept' can only appear on the definition of a function template or variable template}}
template<typename T>
concept bool D6; // expected-error {{variable concept declaration must be initialized}}
template<typename T>
concept bool D7() throw(int) { return true; } // expected-error {{function concept cannot have exception specification}}
// Tag
concept class CC1 {}; // expected-error {{'concept' can only appear on the definition of a function template or variable template}}
concept struct CS1 {}; // expected-error {{'concept' can only appear on the definition of a function template or variable template}}
concept union CU1 {}; // expected-error {{'concept' can only appear on the definition of a function template or variable template}}
concept enum CE1 {}; // expected-error {{'concept' can only appear on the definition of a function template or variable template}}
template <typename T> concept class TCC1 {}; // expected-error {{'concept' can only appear on the definition of a function template or variable template}}
template <typename T> concept struct TCS1 {}; // expected-error {{'concept' can only appear on the definition of a function template or variable template}}
template <typename T> concept union TCU1 {}; // expected-error {{'concept' can only appear on the definition of a function template or variable template}}
typedef concept int CI; // expected-error {{'concept' can only appear on the definition of a function template or variable template}}
void fpc(concept int i) {} // expected-error {{'concept' can only appear on the definition of a function template or variable template}}
concept bool; // expected-error {{'concept' can only appear on the definition of a function template or variable template}}
template <typename T> concept bool VCEI{ true };
template concept bool VCEI<int>; // expected-error {{'concept' cannot be applied on an explicit instantiation}}
extern template concept bool VCEI<int>; // expected-error {{'concept' cannot be applied on an explicit instantiation}}
template <typename T> concept bool VCPS{ true };
template <typename T> concept bool VCPS<T *>{ true }; // expected-error {{'concept' cannot be applied on an partial specialization}}
template <typename T> concept bool VCES{ true };
template <> concept bool VCES<int>{ true }; // expected-error {{'concept' cannot be applied on an explicit specialization}}
template <typename T> concept bool FCEI() { return true; }
template concept bool FCEI<int>(); // expected-error {{'concept' cannot be applied on an explicit instantiation}}
extern template concept bool FCEI<int>(); // expected-error {{'concept' cannot be applied on an explicit instantiation}}
template <typename T> concept bool FCES() { return true; }
template <> concept bool FCES<bool>() { return true; } // expected-error {{'concept' cannot be applied on an explicit specialization}}
|
