libcxx/test/std/input.output/file.streams/c.files/cstdio.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 // test <cstdio>
  10
  11 #include <cstdio>
  12 #include <type_traits>
  13
  14 #include "test_macros.h"
  15
  16 #ifndef BUFSIZ
  17 #error BUFSIZ not defined
  18 #endif
  19
  20 #ifndef EOF
  21 #error EOF not defined
  22 #endif
  23
  24 #ifndef FILENAME_MAX
  25 #error FILENAME_MAX not defined
  26 #endif
  27
  28 #ifndef FOPEN_MAX
  29 #error FOPEN_MAX not defined
  30 #endif
  31
  32 #ifndef L_tmpnam
  33 #error L_tmpnam not defined
  34 #endif
  35
  36 #ifndef NULL
  37 #error NULL not defined
  38 #endif
  39
  40 #ifndef SEEK_CUR
  41 #error SEEK_CUR not defined
  42 #endif
  43
  44 #ifndef SEEK_END
  45 #error SEEK_END not defined
  46 #endif
  47
  48 #ifndef SEEK_SET
  49 #error SEEK_SET not defined
  50 #endif
  51
  52 #ifndef TMP_MAX
  53 #error TMP_MAX not defined
  54 #endif
  55
  56 #ifndef _IOFBF
  57 #error _IOFBF not defined
  58 #endif
  59
  60 #ifndef _IOLBF
  61 #error _IOLBF not defined
  62 #endif
  63
  64 #ifndef _IONBF
  65 #error _IONBF not defined
  66 #endif
  67
  68 #ifndef stderr
  69 #error stderr not defined
  70 #endif
  71
  72 #ifndef stdin
  73 #error stdin not defined
  74 #endif
  75
  76 #ifndef stdout
  77 #error stdout not defined
  78 #endif
  79
  80 #include <cstdarg>
  81
  82 TEST_CLANG_DIAGNOSTIC_IGNORED("-Wformat-zero-length")
  83
  84 int main(int, char**)
  85 {
  86     std::FILE* fp = 0;
  87     std::fpos_t fpos = std::fpos_t();
  88     std::size_t s = 0;
  89     char* cp = 0;
  90     std::va_list va;
  91     void const* vp = 0;
  92     ((void)fp); // Prevent unused warning
  93     ((void)fpos); // Prevent unused warning
  94     ((void)s); // Prevent unused warning
  95     ((void)cp); // Prevent unused warning
  96     ((void)va); // Prevent unused warning
  97     ((void)vp); // Prevent unused warning
  98     static_assert((std::is_same<decltype(std::fclose(fp)), int>::value), "");
  99     static_assert((std::is_same<decltype(std::fflush(fp)), int>::value), "");
 100     static_assert((std::is_same<decltype(std::setbuf(fp,cp)), void>::value), "");
 101     static_assert((std::is_same<decltype(std::vfprintf(fp," ",va)), int>::value), "");
 102     static_assert((std::is_same<decltype(std::fprintf(fp," ")), int>::value), "");
 103     static_assert((std::is_same<decltype(std::fscanf(fp," ")), int>::value), "");
 104     static_assert((std::is_same<decltype(std::snprintf(cp,0," ")), int>::value), "");
 105     TEST_DIAGNOSTIC_PUSH
 106     TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
 107     TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
 108     static_assert((std::is_same<decltype(std::sprintf(cp," ")), int>::value), "");
 109     TEST_DIAGNOSTIC_POP
 110     static_assert((std::is_same<decltype(std::sscanf(""," ")), int>::value), "");
 111     static_assert((std::is_same<decltype(std::vfprintf(fp," ",va)), int>::value), "");
 112     static_assert((std::is_same<decltype(std::vfscanf(fp," ",va)), int>::value), "");
 113     static_assert((std::is_same<decltype(std::vsnprintf(cp,0," ",va)), int>::value), "");
 114     TEST_DIAGNOSTIC_PUSH
 115     TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
 116     TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
 117     static_assert((std::is_same<decltype(std::vsprintf(cp," ",va)), int>::value), "");
 118     TEST_DIAGNOSTIC_POP
 119     static_assert((std::is_same<decltype(std::vsscanf(""," ",va)), int>::value), "");
 120     static_assert((std::is_same<decltype(std::fgetc(fp)), int>::value), "");
 121     static_assert((std::is_same<decltype(std::fgets(cp,0,fp)), char*>::value), "");
 122     static_assert((std::is_same<decltype(std::fputc(0,fp)), int>::value), "");
 123     static_assert((std::is_same<decltype(std::fputs("",fp)), int>::value), "");
 124     static_assert((std::is_same<decltype(std::getc(fp)), int>::value), "");
 125     static_assert((std::is_same<decltype(std::putc(0,fp)), int>::value), "");
 126     static_assert((std::is_same<decltype(std::ungetc(0,fp)), int>::value), "");
 127     static_assert((std::is_same<decltype(std::fread((void*)0,0,0,fp)), std::size_t>::value), "");
 128     static_assert((std::is_same<decltype(std::fwrite(vp,0,0,fp)), std::size_t>::value), "");
 129 #ifndef TEST_HAS_NO_FGETPOS_FSETPOS
 130     static_assert((std::is_same<decltype(std::fgetpos(fp, &fpos)), int>::value), "");
 131 #endif
 132     static_assert((std::is_same<decltype(std::fseek(fp, 0,0)), int>::value), "");
 133 #ifndef TEST_HAS_NO_FGETPOS_FSETPOS
 134     static_assert((std::is_same<decltype(std::fsetpos(fp, &fpos)), int>::value), "");
 135 #endif
 136     static_assert((std::is_same<decltype(std::ftell(fp)), long>::value), "");
 137     static_assert((std::is_same<decltype(std::rewind(fp)), void>::value), "");
 138     static_assert((std::is_same<decltype(std::clearerr(fp)), void>::value), "");
 139     static_assert((std::is_same<decltype(std::feof(fp)), int>::value), "");
 140     static_assert((std::is_same<decltype(std::ferror(fp)), int>::value), "");
 141     static_assert((std::is_same<decltype(std::perror("")), void>::value), "");
 142
 143     static_assert((std::is_same<decltype(std::fopen("", "")), std::FILE*>::value), "");
 144     static_assert((std::is_same<decltype(std::freopen("", "", fp)), std::FILE*>::value), "");
 145     static_assert((std::is_same<decltype(std::remove("")), int>::value), "");
 146     static_assert((std::is_same<decltype(std::rename("","")), int>::value), "");
 147     static_assert((std::is_same<decltype(std::tmpfile()), std::FILE*>::value), "");
 148
 149     TEST_DIAGNOSTIC_PUSH
 150     TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
 151     TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
 152     static_assert((std::is_same<decltype(std::tmpnam(cp)), char*>::value), "");
 153     TEST_DIAGNOSTIC_POP
 154
 155     static_assert((std::is_same<decltype(std::getchar()), int>::value), "");
 156 #if TEST_STD_VER <= 11
 157     TEST_DIAGNOSTIC_PUSH
 158     TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
 159     TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
 160     static_assert((std::is_same<decltype(std::gets(cp)), char*>::value), "");
 161     TEST_DIAGNOSTIC_POP
 162 #endif
 163     static_assert((std::is_same<decltype(std::scanf(" ")), int>::value), "");
 164     static_assert((std::is_same<decltype(std::vscanf(" ",va)), int>::value), "");
 165
 166     static_assert((std::is_same<decltype(std::printf(" ")), int>::value), "");
 167     static_assert((std::is_same<decltype(std::putchar(0)), int>::value), "");
 168     static_assert((std::is_same<decltype(std::puts("")), int>::value), "");
 169     static_assert((std::is_same<decltype(std::vprintf(" ",va)), int>::value), "");
 170
 171   return 0;
 172 }