[Development] QArrayDataObs/Pointer UB post-mortem

[Tim Blechmann]

>> Which customer wants to sit on a version of Qt with a known, unfixed bug?
> 
> Every customer who is not affected by such a bug and wants to avoid
> large changes that might cause regression bugs
> that would actually impact them.
in my former projects *no* product update which uses a new qt version 
(minor or patch) would go out to customers without a full manual QA. 
this not only applied to qt, but to every other component in order to 
ensure the quality of the product.

the QA step in a release process could only be bypassed under very 
special conditions, e.g. when the changeset has a minimal number of 
moving parts