rem: PRINT(("%s\n", __PRETTY_FUNCTION__));
context: zero_region(BRegion *region){	PRINT(("%s\n", __PRETTY_FUNCTION__));		region->count = 0;	region->bound.left = 0x7ffffffd;	region->bound.top = 0x7ffffffd;	region->bound.right = 0x80000003;	region->bound.bottom = 0x80000003;}