brk() COHERENT System Call brk() Change size of data area brk(addr) char *addr; The break is the lowest address above the data area of a process. brk sets the break to the given addr, possibly rounding up by some machine-dependent factor. It returns zero on success, -1 on failure. ***** See Also ***** COHERENT system calls, end, exec, malloc(), sbrk() ***** Diagnostics ***** brk sets errno to ENOMEM if the request fails. COHERENT Lexicon Page 1