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// <codecvt> 11 12// template <class Elem, unsigned long Maxcode = 0x10ffff, 13// codecvt_mode Mode = (codecvt_mode)0> 14// class codecvt_utf8 15// : public codecvt<Elem, char, mbstate_t> 16// { 17// // unspecified 18// }; 19 20// result 21// unshift(stateT& state, 22// externT* to, externT* to_end, externT*& to_next) const; 23 24#include <codecvt> 25#include <cassert> 26 27int main() 28{ 29 { 30 typedef std::codecvt_utf8<wchar_t> C; 31 C c; 32 char n[4] = {0}; 33 std::mbstate_t m; 34 char* np = nullptr; 35 std::codecvt_base::result r = c.unshift(m, n, n+4, np); 36 assert(r == std::codecvt_base::noconv); 37 } 38 { 39 typedef std::codecvt_utf8<char16_t> C; 40 C c; 41 char n[4] = {0}; 42 std::mbstate_t m; 43 char* np = nullptr; 44 std::codecvt_base::result r = c.unshift(m, n, n+4, np); 45 assert(r == std::codecvt_base::noconv); 46 } 47 { 48 typedef std::codecvt_utf8<char32_t> C; 49 C c; 50 char n[4] = {0}; 51 std::mbstate_t m; 52 char* np = nullptr; 53 std::codecvt_base::result r = c.unshift(m, n, n+4, np); 54 assert(r == std::codecvt_base::noconv); 55 } 56} 57