STACK_DIR_UPPER   219 thread_pthread.c 	STACK_DIR_UPPER((void)0, *addr = (char *)*addr + guard);
STACK_DIR_UPPER   828 thread_pthread.c 	base = (char *)th->machine_stack_start - STACK_DIR_UPPER(0, size);
STACK_DIR_UPPER   832 thread_pthread.c 	STACK_DIR_UPPER(base = (char *)base + size, (void)0);
STACK_DIR_UPPER   840 thread_pthread.c     if (STACK_DIR_UPPER(1, 0)) {