source: vendor/glibc-tests/2005-06-14/gnulib/tst-gcc.c

/* Test program for the gcc interface.
   Copyright (C) 2000 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <stdio.h>

#define __no_type_class         -1
#define __void_type_class        0
#define __integer_type_class     1
#define __char_type_class        2
#define __enumeral_type_class    3
#define __boolean_type_class     4
#define __pointer_type_class     5
#define __reference_type_class   6
#define __offset_type_class      7
#define __real_type_class        8
#define __complex_type_class     9
#define __function_type_class   10
#define __method_type_class     11
#define __record_type_class     12
#define __union_type_class      13
#define __array_type_class      14
#define __string_type_class     15
#define __set_type_class        16
#define __file_type_class       17
#define __lang_type_class       18


#define TEST(var) \
  ({ int wrong = (__builtin_classify_type (__##var##_type)                    \
                  != __##var##_type_class);                                   \
     printf ("%-15s is %d: %s\n",                                             \
             #var, __builtin_classify_type (__##var##_type),                  \
             wrong ? "WRONG" : "OK");                                         \
     wrong;                                                                   \
  })


int
main (void)
{
  int result = 0;
  int __integer_type;
  void *__pointer_type;
  double __real_type;
  __complex__ double __complex_type;
  struct { int a; } __record_type;
  union { int a; int b; } __union_type;

  result |= TEST (integer);
  result |= TEST (pointer);
  result |= TEST (real);
  result |= TEST (complex);
  result |= TEST (record);
  result |= TEST (union);

  return result;
}