On Tue, 21 Jul 2020 at 23:48, Ville Voutilainen <ville.voutilai...@gmail.com> wrote: > > On Tue, 21 Jul 2020 at 22:12, Thiago Macieira <thiago.macie...@intel.com> > wrote: > > > > On Tuesday, 21 July 2020 10:40:27 PDT Ville Voutilainen wrote: > > > A very significant goal of this exercise is achieving notational > > > convenience. Theoretical concerns about UB > > > in the presence of papers that apparently excise that UB shouldn't > > > stand in the way of that goal. > > > > Sorry, I don't agree. We can't use something that is unimplementable. > > Oh, when did that change? Was qobject_cast changed not to be UB?
See also all the memcpys that are done with types that are polymorphic, and the ones where we memcpy types that have user-provided copy operations. qtbase is UB left right and center, but it's certainly interesting that when a new thing in it might be clarified not to be UB after all, we perform all kinds of somersaults to avoid such dark corners. _______________________________________________ Development mailing list Development@qt-project.org https://lists.qt-project.org/listinfo/development
