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Manpages ALLOCASection: Linux Programmer's Manual (3 )Updated: 1993-11-29 Index Return to Main Contents NAMEalloca - memory allocatorSYNOPSIS#include <stdlib.h>DESCRIPTIONThe alloca function allocates size bytes of space in the stack frame of the caller. This temporary space is automatically freed on return.RETURN VALUEThe alloca function returns a pointer to the beginning of the allocated space. If the allocation failed, a NULL pointer is returned.CONFORMING TOThere is evidence that the alloca function appeared in 32v, pwb, pwb.2, 3bsd, and 4bsd. There is a man page for it in BSD 4.3. Linux uses the GNU version.BUGSThe alloca function is machine dependent.SEE ALSObrk(2), pagesize(2), calloc(3), malloc(3), realloc(3)
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