On Sun, 19 Jul 2020 at 15:25, Oswald Buddenhagen <oswald.buddenha...@gmx.de> wrote: > (side effects of) actual optimizations are by definition not intentional > belligerence. (one would, however, expect that entire chunks of code > being thrown away would result in a warning that informs about > specifically that (and not just the underlying warning, which may or may > not be enabled).)
One could hope so, but expecting that would be foolish. Current optimizers seem to consider warnings to be a job of the front-end, but if the optimizations are value-based rather than symbolic, the front-end can't warn, and then the optimizer won't, and dead code that was considered dead because it has UB will just be axed without warning. _______________________________________________ Development mailing list Development@qt-project.org https://lists.qt-project.org/listinfo/development
