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Use of alloca function
Post 302365234 by Corona688 on Monday 26th of October 2009 11:41:00 AM
10-26-2009
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LEARN ABOUT FREEBSD
alloca
ALLOCA(3) BSD Library Functions Manual ALLOCA(3) NAME
alloca -- memory allocator LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <stdlib.h> void * alloca(size_t size); DESCRIPTION
The alloca() function allocates size bytes of space in the stack frame of the caller. This temporary space is automatically freed on return. RETURN VALUES
The alloca() function returns a pointer to the beginning of the allocated space. SEE ALSO
brk(2), calloc(3), getpagesize(3), malloc(3), realloc(3) HISTORY
The alloca() function appeared in Version 32V AT&T UNIX. BUGS
The alloca() function is machine and compiler dependent; its use is discouraged. The alloca() function is slightly unsafe because it cannot ensure that the pointer returned points to a valid and usable block of memory. The allocation made may exceed the bounds of the stack, or even go further into other objects in memory, and alloca() cannot determine such an error. Avoid alloca() with large unbounded allocations. BSD
September 5, 2006 BSD