62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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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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#ifdef __cplusplus
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extern "C" {
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#endif
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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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/* If somehow another declaration of alloca happened. This shouldn't happen, but
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glibc does this and we might as well do it also. */
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#undef alloca
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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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