1/** \file test-integers.c
2 * \brief Check assumptions about integer types (sizes, ranges).
3 *
4 * Copyright (C) 2007 Hans Ulrich Niedermann <gp@n-dimensional.de>
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA  02110-1301  USA.
20 */
21
22
23#include "libexif/_stdint.h"
24#include <stdlib.h>
25#include <stdio.h>
26
27
28typedef enum {
29   EN_A,
30   EN_B,
31   EN_C,
32   EN_D,
33   EN_E,
34   EN_F
35} enum_t;
36
37
38#if defined(__GNUC__) && (__GNUC__ >= 4)
39# define CHECK(condition)					     \
40	if (!(condition)) {					     \
41		fprintf(stderr, "%s:%d: check failed: %s\n",	     \
42			__FILE__, __LINE__, #condition);	     \
43		errors++;					     \
44	}
45#else
46# define CHECK(condition)					     \
47	if (!(condition)) {					     \
48		abort();					     \
49	}
50#endif
51
52
53int main()
54{
55  unsigned int errors = 0;
56
57  /* libexif assumes unsigned ints are not smaller than 32bit in many places */
58  CHECK(sizeof(unsigned int) >= sizeof(uint32_t));
59
60  /* libexif assumes that enums fit into ints */
61  CHECK(sizeof(enum_t) <= sizeof(int));
62
63  return (errors>0)?1:0;
64}
65