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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// struct destroying_delete_t {
// explicit destroying_delete_t() = default;
// };
// inline constexpr destroying_delete_t destroying_delete{};
// UNSUPPORTED: c++03, c++11, c++14, c++17
// UNSUPPORTED: apple-clang-9, apple-clang-10
// UNSUPPORTED: clang-6, clang-7
#include <new>
#include <cassert>
#include "test_macros.h"
struct A {
void *data;
A();
~A();
static A* New();
void operator delete(A*, std::destroying_delete_t);
};
bool A_constructed = false;
bool A_destroyed = false;
bool A_destroying_deleted = false;
A::A() {
A_constructed = true;
}
A::~A() {
A_destroyed = true;
}
A* A::New() {
return new(::operator new(sizeof(A))) A();
}
void A::operator delete(A* a, std::destroying_delete_t) {
A_destroying_deleted = true;
::operator delete(a);
}
// Only test the definition of the library feature-test macro when the compiler
// supports the feature -- otherwise we don't define the library feature-test
// macro.
#if defined(__cpp_impl_destroying_delete)
# if !defined(__cpp_lib_destroying_delete)
# error "Expected __cpp_lib_destroying_delete to be defined"
# elif __cpp_lib_destroying_delete < 201806L
# error "Unexpected value of __cpp_lib_destroying_delete"
# endif
#else
# if defined(__cpp_lib_destroying_delete)
# error "The library feature-test macro for destroying delete shouldn't be defined when the compiler doesn't support the language feature"
# endif
#endif
int main(int, char**) {
// Ensure that we call the destroying delete and not the destructor.
A* ap = A::New();
assert(A_constructed);
delete ap;
assert(!A_destroyed);
assert(A_destroying_deleted);
return 0;
}
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