No surprises, as char16_t is transparently handled by QChar overloads.
Ok, one surprise: we seem to have QChar <> QByteArray relational
operators, but they don't work for char16_t. Probably members of
QChar, so LHS implicit conversions are disabled. Didn't investigate,
because it needs to be fixed at some point anyway, but that point is
not now.
Change-Id: I74e1c9bdd168e6480e18d7d86c1f13412e718a32
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>