cxx2a-defaulted-comparison.cpp
1.38 KB
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
// RUN: %clang_cc1 -std=c++2a -verify -Wno-defaulted-function-deleted -include %s %s
//
// RUN: %clang_cc1 -std=c++2a -emit-pch %s -o %t.pch
// RUN: %clang_cc1 -std=c++2a -include-pch %t.pch %s -verify
//
// RUN: %clang_cc1 -std=c++2a -emit-pch -fpch-instantiate-templates %s -o %t.pch
// RUN: %clang_cc1 -std=c++2a -include-pch %t.pch %s -verify
// expected-no-diagnostics
#ifndef INCLUDED
#define INCLUDED
namespace std {
struct strong_ordering {
int n;
constexpr operator int() const { return n; }
static const strong_ordering equal, greater, less;
};
constexpr strong_ordering strong_ordering::equal = {0};
constexpr strong_ordering strong_ordering::greater = {1};
constexpr strong_ordering strong_ordering::less = {-1};
}
// Ensure that we can round-trip DefaultedFunctionInfo through an AST file.
namespace LookupContext {
struct A {};
namespace N {
template <typename T> auto f() {
bool operator==(const T &, const T &);
bool operator<(const T &, const T &);
struct B {
T a;
std::strong_ordering operator<=>(const B &) const = default;
};
return B();
}
}
}
#else
namespace LookupContext {
namespace M {
bool operator<=>(const A &, const A &) = delete;
bool operator==(const A &, const A &) = delete;
bool operator<(const A &, const A &) = delete;
bool cmp = N::f<A>() < N::f<A>();
}
}
#endif