This upstreams parts of Qt Creator's tst_offset test to serve as
an early warning system by testing private implementation details
that are used in Qt Creator's data structure "pretty printing"
facility.
While the tested implementation details can be changed without
breaking binary or source compatibility, downstream tools like
Qt Creator depend on them.
If this test breaks, you are kindly asked to coordinate with the
downstream stakeholders to avoid tool breakage.
Change-Id: I1286efcec9bef105f80c2163a4f66f5c43f3a218
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
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