Anonymous

/* morecore:  ask system for more memory */   static Header *morecore(unsigned nu)   {       char *cp, *sbrk(int);       Header *up;       if (nu < NALLOC)           nu = NALLOC;       cp = sbrk(nu * sizeof(Header));       if (cp == (char *) -1)   /* no space at all */           return NULL;       up = (Header *) cp;       up->s.size = nu;       free((void *)(up+1));       return freep;   }