ref: 332f070e5a51e5fcc1f2f17f15f67aa98a01b5f4 dir: /sys/src/ape/lib/9/segbrk.c/
#include <lib9.h> extern int _SEGBRK(void*, void*); int segbrk(void *saddr, void *addr) { return _SEGBRK(saddr, addr); }