> warning: indirection of non-volatile null pointer will be deleted, not trap That's a sweet little optimization :) Probably the only reason they don't abort

> warning: indirection of non-volatile null pointer will be deleted, not trap That's a sweet little optimization :) Probably the only reason they don't abort compilation at this point is that someone complained when it broke his tricky little macro which sometimes generates unreachable null dereference. Or something like that.