425620ccdd
Reviewed By: #libc, ldionne Spies: daltenty, sdasgup3, ldionne, arichardson, MTC, ChuanqiXu, mehdi_amini, shauheen, antiagainst, nicolasvasilache, arpith-jacob, mgester, lucyrfox, aartbik, liufengdb, stephenneuendorffer, Joonsoo, grosul1, Kayjukh, jurahul, msifontes, tatianashp, rdzhabarov, teijeong, cota, dcaballe, Chia-hungDuan, wrengr, wenzhicui, arphaman, Mordante, miscco, Quuxplusone, smeenai, libcxx-commits Differential Revision: https://reviews.llvm.org/D110598
47 lines
1007 B
C++
47 lines
1007 B
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03
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// <string>
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// basic_string<charT,traits,Allocator>&
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// operator=(basic_string<charT,traits,Allocator>&& str); // constexpr since C++20
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#include <string>
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#include <cassert>
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#include "test_macros.h"
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TEST_CONSTEXPR_CXX20 bool test() {
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// Test that assignment from {} and {ptr, len} are allowed and are not
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// ambiguous.
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{
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std::string s = "hello world";
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s = {};
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assert(s.empty());
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}
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{
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std::string s = "hello world";
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s = {"abc", 2};
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assert(s == "ab");
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}
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return true;
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}
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int main(int, char**)
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{
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test();
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#if TEST_STD_VER > 17
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static_assert(test());
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#endif
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return 0;
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}
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