libcxx/test/std/depr/depr.c.headers/wchar_h.pass.cpp

   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 // <wchar.h>
  10
  11 #include <wchar.h>
  12 #include <stdarg.h>
  13 #include <stdio.h>
  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 // mbstate_t comes from the underlying C library; it is defined (in C99) as:
  37 //    a complete object type other than an array type that can hold the conversion
  38 //    state information necessary to convert between sequences of multibyte
  39 //    characters and wide characters
  40     mbstate_t mb = {};
  41     size_t s = 0;
  42     tm *tm = 0;
  43     wint_t w = 0;
  44     ::FILE* fp = 0;
  45     ::va_list va;
  46     char* ns = 0;
  47     wchar_t* ws = 0;
  48     ((void)mb); // Prevent unused warning
  49     ((void)s); // Prevent unused warning
  50     ((void)tm); // Prevent unused warning
  51     ((void)w); // Prevent unused warning
  52     ((void)fp); // Prevent unused warning
  53     ((void)va); // Prevent unused warning
  54     ((void)ns); // Prevent unused warning
  55     ((void)ws); // Prevent unused warning
  56     static_assert((std::is_same<decltype(fwprintf(fp, L"")), int>::value), "");
  57     static_assert((std::is_same<decltype(fwscanf(fp, L"")), int>::value), "");
  58     static_assert((std::is_same<decltype(swprintf(ws, s, L"")), int>::value), "");
  59     static_assert((std::is_same<decltype(swscanf(L"", L"")), int>::value), "");
  60     static_assert((std::is_same<decltype(vfwprintf(fp, L"", va)), int>::value), "");
  61     static_assert((std::is_same<decltype(vfwscanf(fp, L"", va)), int>::value), "");
  62     static_assert((std::is_same<decltype(vswprintf(ws, s, L"", va)), int>::value), "");
  63     static_assert((std::is_same<decltype(vswscanf(L"", L"", va)), int>::value), "");
  64     static_assert((std::is_same<decltype(fgetwc(fp)), wint_t>::value), "");
  65     static_assert((std::is_same<decltype(fgetws(ws, 0, fp)), wchar_t*>::value), "");
  66     static_assert((std::is_same<decltype(fputwc(L' ', fp)), wint_t>::value), "");
  67     static_assert((std::is_same<decltype(fputws(L"", fp)), int>::value), "");
  68     static_assert((std::is_same<decltype(fwide(fp, 0)), int>::value), "");
  69     static_assert((std::is_same<decltype(getwc(fp)), wint_t>::value), "");
  70     static_assert((std::is_same<decltype(putwc(L' ', fp)), wint_t>::value), "");
  71     static_assert((std::is_same<decltype(ungetwc(L' ', fp)), wint_t>::value), "");
  72     static_assert((std::is_same<decltype(wcstod(L"", (wchar_t**)0)), double>::value), "");
  73     static_assert((std::is_same<decltype(wcstof(L"", (wchar_t**)0)), float>::value), "");
  74     static_assert((std::is_same<decltype(wcstold(L"", (wchar_t**)0)), long double>::value), "");
  75     static_assert((std::is_same<decltype(wcstol(L"", (wchar_t**)0, 0)), long>::value), "");
  76     static_assert((std::is_same<decltype(wcstoll(L"", (wchar_t**)0, 0)), long long>::value), "");
  77     static_assert((std::is_same<decltype(wcstoul(L"", (wchar_t**)0, 0)), unsigned long>::value), "");
  78     static_assert((std::is_same<decltype(wcstoull(L"", (wchar_t**)0, 0)), unsigned long long>::value), "");
  79     static_assert((std::is_same<decltype(wcscpy(ws, L"")), wchar_t*>::value), "");
  80     static_assert((std::is_same<decltype(wcsncpy(ws, L"", s)), wchar_t*>::value), "");
  81     static_assert((std::is_same<decltype(wcscat(ws, L"")), wchar_t*>::value), "");
  82     static_assert((std::is_same<decltype(wcsncat(ws, L"", s)), wchar_t*>::value), "");
  83     static_assert((std::is_same<decltype(wcscmp(L"", L"")), int>::value), "");
  84     static_assert((std::is_same<decltype(wcscoll(L"", L"")), int>::value), "");
  85     static_assert((std::is_same<decltype(wcsncmp(L"", L"", s)), int>::value), "");
  86     static_assert((std::is_same<decltype(wcsxfrm(ws, L"", s)), size_t>::value), "");
  87     static_assert((std::is_same<decltype(wcschr((wchar_t*)0, L' ')), wchar_t*>::value), "");
  88     static_assert((std::is_same<decltype(wcscspn(L"", L"")), size_t>::value), "");
  89     static_assert((std::is_same<decltype(wcslen(L"")), size_t>::value), "");
  90     static_assert((std::is_same<decltype(wcspbrk((wchar_t*)0, L"")), wchar_t*>::value), "");
  91     static_assert((std::is_same<decltype(wcsrchr((wchar_t*)0, L' ')), wchar_t*>::value), "");
  92     static_assert((std::is_same<decltype(wcsspn(L"", L"")), size_t>::value), "");
  93     static_assert((std::is_same<decltype(wcsstr((wchar_t*)0, L"")), wchar_t*>::value), "");
  94     static_assert((std::is_same<decltype(wcstok(ws, L"", (wchar_t**)0)), wchar_t*>::value), "");
  95     static_assert((std::is_same<decltype(wmemchr((wchar_t*)0, L' ', s)), wchar_t*>::value), "");
  96     static_assert((std::is_same<decltype(wmemcmp(L"", L"", s)), int>::value), "");
  97     static_assert((std::is_same<decltype(wmemcpy(ws, L"", s)), wchar_t*>::value), "");
  98     static_assert((std::is_same<decltype(wmemmove(ws, L"", s)), wchar_t*>::value), "");
  99     static_assert((std::is_same<decltype(wmemset(ws, L' ', s)), wchar_t*>::value), "");
 100     static_assert((std::is_same<decltype(wcsftime(ws, s, L"", tm)), size_t>::value), "");
 101     static_assert((std::is_same<decltype(btowc(0)), wint_t>::value), "");
 102     static_assert((std::is_same<decltype(wctob(w)), int>::value), "");
 103     static_assert((std::is_same<decltype(mbsinit(&mb)), int>::value), "");
 104     static_assert((std::is_same<decltype(mbrlen("", s, &mb)), size_t>::value), "");
 105     static_assert((std::is_same<decltype(mbrtowc(ws, "", s, &mb)), size_t>::value), "");
 106     static_assert((std::is_same<decltype(wcrtomb(ns, L' ', &mb)), size_t>::value), "");
 107     static_assert((std::is_same<decltype(mbsrtowcs(ws, (const char**)0, s, &mb)), size_t>::value), "");
 108     static_assert((std::is_same<decltype(wcsrtombs(ns, (const wchar_t**)0, s, &mb)), size_t>::value), "");
 109
 110     // These tests fail on systems whose C library doesn't provide a correct overload
 111     // set for wcschr, wcspbrk, wcsrchr, wcsstr, and wmemchr, unless the compiler is
 112     // a suitably recent version of Clang.
 113 #if !defined(__APPLE__) || defined(_LIBCPP_PREFERRED_OVERLOAD)
 114     static_assert((std::is_same<decltype(wcschr((const wchar_t*)0, L' ')), const wchar_t*>::value), "");
 115     static_assert((std::is_same<decltype(wcspbrk((const wchar_t*)0, L"")), const wchar_t*>::value), "");
 116     static_assert((std::is_same<decltype(wcsrchr((const wchar_t*)0, L' ')), const wchar_t*>::value), "");
 117     static_assert((std::is_same<decltype(wcsstr((const wchar_t*)0, L"")), const wchar_t*>::value), "");
 118     static_assert((std::is_same<decltype(wmemchr((const wchar_t*)0, L' ', s)), const wchar_t*>::value), "");
 119 #endif
 120
 121 #ifndef _LIBCPP_HAS_NO_STDIN
 122     static_assert((std::is_same<decltype(getwchar()), wint_t>::value), "");
 123     static_assert((std::is_same<decltype(vwscanf(L"", va)), int>::value), "");
 124     static_assert((std::is_same<decltype(wscanf(L"")), int>::value), "");
 125 #endif
 126
 127 #ifndef _LIBCPP_HAS_NO_STDOUT
 128     static_assert((std::is_same<decltype(putwchar(L' ')), wint_t>::value), "");
 129     static_assert((std::is_same<decltype(vwprintf(L"", va)), int>::value), "");
 130     static_assert((std::is_same<decltype(wprintf(L"")), int>::value), "");
 131 #endif
 132
 133   return 0;
 134 }