darling-libcxx/test/std/language.support/support.dynamic/nothrow_t.pass.cpp
Louis Dionne 00f026a08c [libc++] Take 2: Implement LWG 2510
Summary:
LWG2510 makes tag types like allocator_arg_t explicitly default
constructible instead of implicitly default constructible. It also
makes the constructors for std::pair and std::tuple conditionally
explicit based on the explicit-ness of the default constructibility
for the pair/tuple's elements.

This was previously committed as r372777 and reverted in r372832 due to
the commit breaking LLVM's build in C++14 mode. This issue has now been
addressed.

Reviewers: mclow.lists

Subscribers: christof, jkorous, dexonsmith, libcxx-commits

Tags: #libc

Differential Revision: https://reviews.llvm.org/D65161

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@372983 91177308-0d34-0410-b5e6-96231b3b80d8
2019-09-26 14:51:10 +00:00

24 lines
560 B
C++

//===----------------------------------------------------------------------===//
//
// 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 nothrow_t {
// explicit nothrow_t() = default;
// };
// extern const nothrow_t nothrow;
#include <new>
int main(int, char**) {
std::nothrow_t x = std::nothrow;
(void)x;
return 0;
}