xref: /dflybsd-src/include/alloca.h (revision c78f0d6afe27d098d2cdb56c2534969cd79910ab)
1b86ad3f3Szrj /*
2b86ad3f3Szrj  * Copyright (c) 2019 The DragonFly Project.  All rights reserved.
3b86ad3f3Szrj  *
4b86ad3f3Szrj  * Redistribution and use in source and binary forms, with or without
5b86ad3f3Szrj  * modification, are permitted provided that the following conditions
6b86ad3f3Szrj  * are met:
7b86ad3f3Szrj  * 1. Redistributions of source code must retain the above copyright
8b86ad3f3Szrj  *    notice, this list of conditions and the following disclaimer.
9b86ad3f3Szrj  * 2. Redistributions in binary form must reproduce the above copyright
10b86ad3f3Szrj  *    notice, this list of conditions and the following disclaimer in the
11b86ad3f3Szrj  *    documentation and/or other materials provided with the distribution.
12b86ad3f3Szrj  *
13b86ad3f3Szrj  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
14b86ad3f3Szrj  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
15b86ad3f3Szrj  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
16b86ad3f3Szrj  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
17b86ad3f3Szrj  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
18b86ad3f3Szrj  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
19b86ad3f3Szrj  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20b86ad3f3Szrj  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
21b86ad3f3Szrj  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
22b86ad3f3Szrj  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
23b86ad3f3Szrj  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24b86ad3f3Szrj  * SUCH DAMAGE.
25b86ad3f3Szrj  */
26b86ad3f3Szrj 
27b86ad3f3Szrj #ifndef _ALLOCA_H_
28b86ad3f3Szrj #define _ALLOCA_H_
29b86ad3f3Szrj 
30b86ad3f3Szrj #include <sys/cdefs.h>
31b86ad3f3Szrj #include <stddef.h>
32b86ad3f3Szrj 
33b86ad3f3Szrj /*
34159c86f1Szrj  * This header is for compatibility only.  Keep __GNUC__ >= 2 for ports tests.
35b86ad3f3Szrj  */
36b86ad3f3Szrj 
37b86ad3f3Szrj __BEGIN_DECLS
38b86ad3f3Szrj #undef  alloca	/* some GNU bits try to get cute and define this on their own */
39b86ad3f3Szrj void	*alloca(size_t);
40b86ad3f3Szrj 
41*c78f0d6aSSascha Wildner #if __GNUC__ >= 2
42b86ad3f3Szrj #define alloca(sz) __builtin_alloca(sz)
43b86ad3f3Szrj #endif
44b86ad3f3Szrj __END_DECLS
45b86ad3f3Szrj 
46b86ad3f3Szrj #endif /* !_ALLOCA_H_ */
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