// -*- 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. // //===----------------------------------------------------------------------===// // UNSUPPORTED: c++98, c++03, c++11 // UNSUPPORTED: clang-3.3, clang-3.4, clang-3.5, clang-3.6, clang-3.7, clang-3.8, clang-3.9 // UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8 // Note: libc++ supports string_view before C++17, but literals were introduced in C++14 #include <string_view> #include <cassert> int main() { using namespace std; string_view foo = ""sv; assert(foo.length() == 0); }