1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 11 // <string_view> 12 13 // constexpr basic_string_view () noexcept; 14 15 #include <experimental/string_view> 16 #include <cassert> 17 18 template<typename T> 19 void test () { 20 #if _LIBCPP_STD_VER > 11 21 { 22 constexpr T sv1; 23 static_assert ( sv1.size() == 0, "" ); 24 static_assert ( sv1.empty(), ""); 25 } 26 #endif 27 28 { 29 T sv1; 30 assert ( sv1.size() == 0 ); 31 assert ( sv1.empty()); 32 } 33 } 34 35 int main () { 36 typedef std::experimental::string_view string_view; 37 typedef std::experimental::u16string_view u16string_view; 38 typedef std::experimental::u32string_view u32string_view; 39 typedef std::experimental::wstring_view wstring_view; 40 41 test<string_view> (); 42 test<u16string_view> (); 43 test<u32string_view> (); 44 test<wstring_view> (); 45 46 } 47
