64 static	TREE	*Bottom;	/* the last free chunk in the arena */  variable
236 		if (Bottom) {  in malloc_unlocked()
237 			unprotect(Bottom);  in malloc_unlocked()
238 			if (size <= SIZE(Bottom)) {  in malloc_unlocked()
239 				sp = Bottom;  in malloc_unlocked()
242 				protect(Bottom);  in malloc_unlocked()
270 		Bottom = NULL;  in malloc_unlocked()
355 			if (np != Bottom)  in realloc()
358 				Bottom = NULL;  in realloc()
368 			Bottom = tp;  in realloc()
369 			protect(Bottom);  in realloc()
371 				tp = Bottom;  in realloc()
372 				Bottom = NULL;  in realloc()
390 			Bottom = NULL;  in realloc()
524 		if (np != Bottom)  in realfree()
534 		ASSERT(np != Bottom);  in realfree()
545 		Bottom = tp;  in realfree()
640 	tp = Bottom;  in morecore()
732 	if (Bottom && Bottom != tp) {  in morecore()
733 		SETBIT0(SIZE(Bottom));  in morecore()
734 		realfree(DATA(Bottom));  in morecore()