lib/gl/tests/test-func.c

   1 /* Test whether __func__ is available
   2    Copyright (C) 2008-2009 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 <http://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
  18
  19 #include <config.h>
  20
  21 #include <string.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24
  25 #define ASSERT(expr)                                                         \
  26   do                                                                         \
  27     {                                                                        \
  28       if (!(expr))                                                           \
  29         {                                                                    \
  30           fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
  31           fflush (stderr);                                                   \
  32           abort ();                                                          \
  33         }                                                                    \
  34     }                                                                        \
  35   while (0)
  36
  37 int
  38 main ()
  39 {
  40   ASSERT (strlen (__func__) > 0);
  41
  42   /* On SunPRO C 5.9, sizeof __func__ evaluates to 0.  The compiler warns:
  43      "warning: null dimension: sizeof()".  */
  44 #if !defined __SUNPRO_C
  45   ASSERT (strlen (__func__) + 1 == sizeof __func__);
  46 #endif
  47
  48   ASSERT (strcmp (__func__, "main") == 0
  49           || strcmp (__func__, "<unknown function>") == 0);
  50
  51   return 0;
  52 }