And I don't know any other Pascal Compiler who does any checks in this
direction. Do some?
I don't know, but ADA reportedly does.
I don't know the differences to Pascal. Does it have the same syntax for
variant records?
Such a feature definitely seems useful to me.
Of course it would be. But how should it work? Setting the tag variable
when assigning a value and raising an error when reading with different
variant? Then what if the tag variable is changed directly? Or should it
be readonly (which would make sense IMHO).
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