From user point of view it's an improvement in compilation message.
From technical point of view it's an introduction of new compilation
diagnostic.
Review: https://jetbrains.team/p/kt/reviews/9967
I'm going to deprecate `open val` case in the next few commits KT-57553.
But it is always possible to suggest using `final` for `open val` case.
^KT-58346 Fixed
Review: https://jetbrains.team/p/kt/reviews/9967
BTW this commit accidentaly and partially fixes KT-57553 for K2, because
of a cleaner K2 architecture. I will unify MUST_BE_INITIALIZED behaviour
in K1 and K2 in the next commits
^KT-58587 Fixed
Review: https://jetbrains.team/p/kt/reviews/10136
This commit is important in scope of KT-57553. It makes the migration
more smooth.
Other related tests:
- testUninitializedOrReassignedVariables
- testAugmentedAssignmentInInitializer