1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // <cwchar> 10 11 #include <cwchar> 12 #include <ctime> 13 #include <cstdarg> 14 #include <type_traits> 15 16 #include "test_macros.h" 17 18 #ifndef NULL 19 #error NULL not defined 20 #endif 21 22 #ifndef WCHAR_MAX 23 #error WCHAR_MAX not defined 24 #endif 25 26 #ifndef WCHAR_MIN 27 #error WCHAR_MIN not defined 28 #endif 29 30 #ifndef WEOF 31 #error WEOF not defined 32 #endif 33 34 int main(int, char**) 35 { 36 std::mbstate_t mb = {}; 37 std::size_t s = 0; 38 std::tm *tm = 0; 39 std::wint_t w = 0; 40 ::FILE* fp = 0; 41 std::va_list va; 42 43 char* ns = 0; 44 wchar_t* ws = 0; 45 46 ((void)mb); // Prevent unused warning 47 ((void)s); // Prevent unused warning 48 ((void)tm); // Prevent unused warning 49 ((void)w); // Prevent unused warning 50 ((void)fp); // Prevent unused warning 51 ((void)va); // Prevent unused warning 52 ((void)ns); // Prevent unused warning 53 ((void)ws); // Prevent unused warning 54 55 ASSERT_SAME_TYPE(int, decltype(std::fwprintf(fp, L""))); 56 ASSERT_SAME_TYPE(int, decltype(std::fwscanf(fp, L""))); 57 ASSERT_SAME_TYPE(int, decltype(std::swprintf(ws, s, L""))); 58 ASSERT_SAME_TYPE(int, decltype(std::swscanf(L"", L""))); 59 ASSERT_SAME_TYPE(int, decltype(std::vfwprintf(fp, L"", va))); 60 ASSERT_SAME_TYPE(int, decltype(std::vfwscanf(fp, L"", va))); 61 ASSERT_SAME_TYPE(int, decltype(std::vswprintf(ws, s, L"", va))); 62 ASSERT_SAME_TYPE(int, decltype(std::vswscanf(L"", L"", va))); 63 ASSERT_SAME_TYPE(std::wint_t, decltype(std::fgetwc(fp))); 64 ASSERT_SAME_TYPE(wchar_t*, decltype(std::fgetws(ws, 0, fp))); 65 ASSERT_SAME_TYPE(std::wint_t, decltype(std::fputwc(L' ', fp))); 66 ASSERT_SAME_TYPE(int, decltype(std::fputws(L"", fp))); 67 ASSERT_SAME_TYPE(int, decltype(std::fwide(fp, 0))); 68 ASSERT_SAME_TYPE(std::wint_t, decltype(std::getwc(fp))); 69 ASSERT_SAME_TYPE(std::wint_t, decltype(std::putwc(L' ', fp))); 70 ASSERT_SAME_TYPE(std::wint_t, decltype(std::ungetwc(L' ', fp))); 71 ASSERT_SAME_TYPE(double, decltype(std::wcstod(L"", (wchar_t**)0))); 72 ASSERT_SAME_TYPE(float, decltype(std::wcstof(L"", (wchar_t**)0))); 73 ASSERT_SAME_TYPE(long double, decltype(std::wcstold(L"", (wchar_t**)0))); 74 ASSERT_SAME_TYPE(long, decltype(std::wcstol(L"", (wchar_t**)0, 0))); 75 ASSERT_SAME_TYPE(long long, decltype(std::wcstoll(L"", (wchar_t**)0, 0))); 76 ASSERT_SAME_TYPE(unsigned long, decltype(std::wcstoul(L"", (wchar_t**)0, 0))); 77 ASSERT_SAME_TYPE(unsigned long long, decltype(std::wcstoull(L"", (wchar_t**)0, 0))); 78 ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcscpy(ws, L""))); 79 ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcsncpy(ws, L"", s))); 80 ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcscat(ws, L""))); 81 ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcsncat(ws, L"", s))); 82 ASSERT_SAME_TYPE(int, decltype(std::wcscmp(L"", L""))); 83 ASSERT_SAME_TYPE(int, decltype(std::wcscoll(L"", L""))); 84 ASSERT_SAME_TYPE(int, decltype(std::wcsncmp(L"", L"", s))); 85 ASSERT_SAME_TYPE(std::size_t, decltype(std::wcsxfrm(ws, L"", s))); 86 ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcschr((wchar_t*)0, L' '))); 87 ASSERT_SAME_TYPE(std::size_t, decltype(std::wcscspn(L"", L""))); 88 ASSERT_SAME_TYPE(std::size_t, decltype(std::wcslen(L""))); 89 ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcspbrk((wchar_t*)0, L""))); 90 ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcsrchr((wchar_t*)0, L' '))); 91 ASSERT_SAME_TYPE(std::size_t, decltype(std::wcsspn(L"", L""))); 92 ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcsstr((wchar_t*)0, L""))); 93 ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcstok(ws, L"", (wchar_t**)0))); 94 ASSERT_SAME_TYPE(wchar_t*, decltype(std::wmemchr((wchar_t*)0, L' ', s))); 95 ASSERT_SAME_TYPE(int, decltype(std::wmemcmp(L"", L"", s))); 96 ASSERT_SAME_TYPE(wchar_t*, decltype(std::wmemcpy(ws, L"", s))); 97 ASSERT_SAME_TYPE(wchar_t*, decltype(std::wmemmove(ws, L"", s))); 98 ASSERT_SAME_TYPE(wchar_t*, decltype(std::wmemset(ws, L' ', s))); 99 ASSERT_SAME_TYPE(std::size_t, decltype(std::wcsftime(ws, s, L"", tm))); 100 ASSERT_SAME_TYPE(wint_t, decltype(std::btowc(0))); 101 ASSERT_SAME_TYPE(int, decltype(std::wctob(w))); 102 ASSERT_SAME_TYPE(int, decltype(std::mbsinit(&mb))); 103 ASSERT_SAME_TYPE(std::size_t, decltype(std::mbrlen("", s, &mb))); 104 ASSERT_SAME_TYPE(std::size_t, decltype(std::mbrtowc(ws, "", s, &mb))); 105 ASSERT_SAME_TYPE(std::size_t, decltype(std::wcrtomb(ns, L' ', &mb))); 106 ASSERT_SAME_TYPE(std::size_t, decltype(std::mbsrtowcs(ws, (const char**)0, s, &mb))); 107 ASSERT_SAME_TYPE(std::size_t, decltype(std::wcsrtombs(ns, (const wchar_t**)0, s, &mb))); 108 109 // These tests fail on systems whose C library doesn't provide a correct overload 110 // set for wcschr, wcspbrk, wcsrchr, wcsstr, and wmemchr, unless the compiler is 111 // a suitably recent version of Clang. 112 #if !defined(__APPLE__) || defined(_LIBCPP_PREFERRED_OVERLOAD) 113 ASSERT_SAME_TYPE(const wchar_t*, decltype(std::wcschr((const wchar_t*)0, L' '))); 114 ASSERT_SAME_TYPE(const wchar_t*, decltype(std::wcspbrk((const wchar_t*)0, L""))); 115 ASSERT_SAME_TYPE(const wchar_t*, decltype(std::wcsrchr((const wchar_t*)0, L' '))); 116 ASSERT_SAME_TYPE(const wchar_t*, decltype(std::wcsstr((const wchar_t*)0, L""))); 117 ASSERT_SAME_TYPE(const wchar_t*, decltype(std::wmemchr((const wchar_t*)0, L' ', s))); 118 #endif 119 120 #ifndef _LIBCPP_HAS_NO_STDIN 121 ASSERT_SAME_TYPE(std::wint_t, decltype(std::getwchar())); 122 ASSERT_SAME_TYPE(int, decltype(std::vwscanf(L"", va))); 123 ASSERT_SAME_TYPE(int, decltype(std::wscanf(L""))); 124 #endif 125 126 #ifndef _LIBCPP_HAS_NO_STDOUT 127 ASSERT_SAME_TYPE(std::wint_t, decltype(std::putwchar(L' '))); 128 ASSERT_SAME_TYPE(int, decltype(std::vwprintf(L"", va))); 129 ASSERT_SAME_TYPE(int, decltype(std::wprintf(L""))); 130 #endif 131 132 return 0; 133 } 134