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// <locale> 11 12// template <> class codecvt<char32_t, char, mbstate_t> 13 14// result unshift(stateT& state, 15// externT* to, externT* to_end, externT*& to_next) const; 16 17#include <locale> 18#include <string> 19#include <vector> 20#include <cassert> 21 22typedef std::codecvt<char32_t, char, std::mbstate_t> F; 23 24int main() 25{ 26 std::locale l = std::locale::classic(); 27 std::vector<char> to(3); 28 const F& f = std::use_facet<F>(l); 29 std::mbstate_t mbs = {0}; 30 char* to_next = 0; 31 assert(f.unshift(mbs, to.data(), to.data() + to.size(), to_next) == F::noconv); 32 assert(to_next == to.data()); 33} 34