From 681fd7a07d6eb875c490e8c1baebb8a9f0a03109 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sat, 29 Aug 2015 04:52:31 +0200 Subject: add alloca.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- include/alloca.h | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 include/alloca.h 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 . + */ +#ifndef _ALLOCA_H +#define _ALLOCA_H +#include + + + +#define __NEED_size_t +#include + + +/* 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 + -- cgit v1.2.3-70-g09d2