tests/test-stdlib.c

   1 /* Test of <stdlib.h> substitute.
   2    Copyright (C) 2007, 2009-2024 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
  18
  19 #include <config.h>
  20
  21 #include <stdlib.h>
  22
  23 /* Check that EXIT_SUCCESS is 0, per POSIX.  */
  24 static int exitcode = EXIT_SUCCESS;
  25 #if EXIT_SUCCESS
  26 "oops"
  27 #endif
  28
  29 /* Check for GNU value (not guaranteed by POSIX, but is guaranteed by
  30    gnulib).  */
  31 #if EXIT_FAILURE != 1
  32 "oops"
  33 #endif
  34
  35 /* Check that NULL can be passed through varargs as a pointer type,
  36    per POSIX 2008.  */
  37 static_assert (sizeof NULL == sizeof (void *));
  38
  39 #if GNULIB_TEST_SYSTEM_POSIX
  40 # include "test-sys_wait.h"
  41 #else
  42 # define test_sys_wait_macros() 0
  43 #endif
  44
  45 int
  46 main (void)
  47 {
  48   /* POSIX:2018 says:
  49      "In the POSIX locale the value of MB_CUR_MAX shall be 1."  */
  50   /* On Android ≥ 5.0, the default locale is the "C.UTF-8" locale, not the
  51      "C" locale.  Furthermore, when you attempt to set the "C" or "POSIX"
  52      locale via setlocale(), what you get is a "C" locale with UTF-8 encoding,
  53      that is, effectively the "C.UTF-8" locale.  */
  54 #ifndef __ANDROID__
  55   if (MB_CUR_MAX != 1)
  56     return 1;
  57 #endif
  58
  59   if (test_sys_wait_macros ())
  60     return 2;
  61
  62   return exitcode;
  63 }