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Diffstat (limited to 'include')
| -rw-r--r-- | include/alloca.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/include/alloca.h b/include/alloca.h new file mode 100644 index 0000000..fe70c36 --- /dev/null +++ b/include/alloca.h @@ -0,0 +1,51 @@ +/** + * slibc — Yet another C library + * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org) + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +#ifndef _ALLOCA_H +#define _ALLOCA_H +#include <slibc/version.h> + + + +#define __NEED_size_t +#include <bits/types.h> + + +/* alloca is machine- _and_ compiler-dependent, it is not + * implemented in slibc, but in the compiler. */ + + +/** + * Allocation memory in the stack frame of the caller. + * + * Undefined behaviour is invoked if the memory + * cannot be allocated. + * + * @param size The number of bytes to allocate. + * @return Pointer to the beginning of the allocated + * space. Do not free it, it will be freed + * automatically when the function returns. + */ +void* alloca(size_t size); +#if defined(__GNUC__) +# define alloca(size) __builtin_alloca(size) +#endif + + + +#endif + |