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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14
// Throwing bad_variant_access is supported starting in macosx10.13
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
// <variant>
// template <class Visitor, class... Variants>
// constexpr see below visit(Visitor&& vis, Variants&&... vars);
#include <variant>
#include "test_macros.h"
struct Incomplete;
template<class T> struct Holder { T t; };
constexpr bool test(bool do_it)
{
if (do_it) {
std::variant<Holder<Incomplete>*, int> v = nullptr;
std::visit([](auto){}, v);
std::visit([](auto) -> Holder<Incomplete>* { return nullptr; }, v);
#if TEST_STD_VER > 17
std::visit<void>([](auto){}, v);
std::visit<void*>([](auto) -> Holder<Incomplete>* { return nullptr; }, v);
#endif
}
return true;
}
int main(int, char**)
{
test(true);
#if TEST_STD_VER > 17
static_assert(test(true));
#endif
return 0;
}
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