// { dg-options "-std=gnu++17" } // Copyright (C) 2013-2020 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING3. If not see // . #include #include void test01() { using std::wstring_view; wstring_view str0{L"olympus mons"}; wstring_view::pointer p = str0.data(); str0.remove_suffix(2); VERIFY( str0.data() == p); VERIFY( str0.length() == 10 ); VERIFY( str0 == wstring_view{L"olympus mo"} ); } constexpr bool test02() { using std::wstring_view; wstring_view str0{L"olympus mons"}; wstring_view::pointer p = str0.data(); str0.remove_suffix(2); if ( str0.data() != p) return false; if ( str0.length() != 10 ) return false; if ( str0 != wstring_view{L"olympus mo"} ) return false; return true; } int main() { test01(); static_assert( test02() ); return 0; }