#include <stddef.h>
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Functions | |
| void * | alloca (size_t) |
| Memory allocation on the stack. More... | |
Function Documentation
◆ alloca()
| void* alloca | ( | size_t | ) |
Memory allocation on the stack.
Copyright (C) 1995, 1999, 2001-2004, 2006-2014 Free Software Foundation, Inc.
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, 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/. Avoid using the symbol _ALLOCA_H here, as Bison assumes _ALLOCA_H means there is a real alloca function.
alloca (N) returns a pointer to N bytes of memory allocated on the stack, which will last until the function returns. Use of alloca should be avoided:
- inside arguments of function calls - undefined behaviour,
- in inline functions - the allocation may actually last until the calling function returns,
- for huge N (say, N >= 65536) - you never know how large (or small) the stack is, and when the stack cannot fulfill the memory allocation request, the program just crashes.
Referenced by VASNPRINTF().
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