On Sun, Mar 03, 2019 at 02:16:46PM +0100, Luc Van Oostenryck wrote: > I would not be opposed at all o conditionalize it with some > warning flag like '-Wcast-truncates-constant'. The real > question is if it should default to 'on' or to 'off'. In fact, the flag already exists: -W[no-]cast-truncate -- Luc