1 // -*- C++ -*- 2 //===----------------------------------------------------------------------===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 // UNSUPPORTED: c++03, c++11 11 12 // Note: libc++ supports string_view before C++17, but literals were introduced in C++14 13 14 #include <string_view> 15 #include <cassert> 16 17 #include "test_macros.h" 18 main(int,char **)19int main(int, char**) 20 { 21 using namespace std::literals::string_view_literals; 22 23 std::string_view foo = ""sv; 24 assert(foo.length() == 0); 25 26 return 0; 27 } 28