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611dc22e73
This change makes all the standard library and kernel headers use header guards with a consistent scheme within the reserved namespace to avoid conflicts with non-standard-library-implementation code.
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/*
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* Copyright (c) 2013, 2016 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* alloca.h
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* Stack-based memory allocation.
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*/
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#ifndef _INCLUDE_ALLOCA_H
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#define _INCLUDE_ALLOCA_H
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#include <sys/cdefs.h>
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#include <sys/__/types.h>
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#ifndef __size_t_defined
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#define __size_t_defined
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#define __need_size_t
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#include <stddef.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Declare a function prototype despite that there really is no alloca function
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in Sortix. The compiler will normally be run with -fbuiltin and simply use
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the compiler builtin as intended. */
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void* alloca(size_t);
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/* In case the compilation is run with -fno-builtin, we'll call the builtin
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function directly, since there is no alloca function in the first place. You
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can simply undef this if you want the real prototype, which will give a link
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error if -fno-builtin is passed. */
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#define alloca(size) __builtin_alloca(size)
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif
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