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//===----------------------------------------------------------------------===//
//
// 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
// <string>
// basic_string<charT,traits,Allocator>&
// operator=(basic_string<charT,traits,Allocator>&& str); // constexpr since C++20
#include <string>
#include <cassert>
#include "test_macros.h"
TEST_CONSTEXPR_CXX20 bool test() {
// Test that assignment from {} and {ptr, len} are allowed and are not
// ambiguous.
{
std::string s = "hello world";
s = {};
assert(s.empty());
}
{
std::string s = "hello world";
s = {"abc", 2};
assert(s == "ab");
}
return true;
}
int main(int, char**)
{
test();
#if TEST_STD_VER > 17
static_assert(test());
#endif
return 0;
}
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