libcxx/test/std/strings/string.view/string_view.literals/literal2.pass.cpp

   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
  19 int 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 }