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ALLOCA(3) Library Functions Manual ALLOCA(3)

allocamemory allocator

library “libc”

#include <stdlib.h>

void *
alloca(size_t size);

The () function allocates size bytes of space in the stack frame of the caller. This temporary space is automatically freed on return.

The alloca() function returns a pointer to the beginning of the allocated space. If the allocation failed, a NULL pointer is returned.

cc(1), brk(2), calloc(3), getpagesize(3), malloc(3), realloc(3), security(7)

Few limitations can be mentioned:

October 24, 2012 NetBSD-9.2