57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
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//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <codecvt>
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// template <class Elem, unsigned long Maxcode = 0x10ffff,
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// codecvt_mode Mode = (codecvt_mode)0>
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// class codecvt_utf8
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// : public codecvt<Elem, char, mbstate_t>
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// {
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// // unspecified
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// };
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// result
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// unshift(stateT& state,
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// externT* to, externT* to_end, externT*& to_next) const;
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#include <codecvt>
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#include <cassert>
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int main()
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{
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{
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typedef std::codecvt_utf8<wchar_t> C;
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C c;
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char n[4] = {0};
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std::mbstate_t m;
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char* np = nullptr;
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std::codecvt_base::result r = c.unshift(m, n, n+4, np);
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assert(r == std::codecvt_base::noconv);
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}
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{
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typedef std::codecvt_utf8<char16_t> C;
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C c;
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char n[4] = {0};
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std::mbstate_t m;
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char* np = nullptr;
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std::codecvt_base::result r = c.unshift(m, n, n+4, np);
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assert(r == std::codecvt_base::noconv);
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}
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{
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typedef std::codecvt_utf8<char32_t> C;
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C c;
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char n[4] = {0};
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std::mbstate_t m;
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char* np = nullptr;
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std::codecvt_base::result r = c.unshift(m, n, n+4, np);
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assert(r == std::codecvt_base::noconv);
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}
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}
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