posix/test-ssize-max.c

   1 /* Test SSIZE_MAX value and type.
   2    Copyright (C) 2018-2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <limits.h>
  20 #include <sys/types.h>
  21
  22 /* Test SSIZE_MAX has type ssize_t.  */
  23 ssize_t x;
  24 extern __typeof (SSIZE_MAX) x;
  25
  26 /* Test the value of SSIZE_MAX.  */
  27 _Static_assert (SSIZE_MAX == (sizeof (ssize_t) == sizeof (int)
  28                               ? INT_MAX
  29                               : LONG_MAX),
  30                 "value of SSIZE_MAX");
  31
  32 static int
  33 do_test (void)
  34 {
  35   /* This is a compilation test.  */
  36   return 0;
  37 }
  38
  39 #include <support/test-driver.c>