... by adding more arguments, but then constraining that they don't,
actually, exist.
This makes the the signature of a normal qHash(T, size_t) consistently
a better overload (for same T) than the 1-to-2 adapter. It doesn't
solve the problem that the adapter inserts hash functions for types
that were never defined to be hashable (cf. e.g. QTBUG-116076). But
the adapter is already slated for removal in Qt 7, which will solve
the issue, though maybe we can expedite its demise in 6.9.
Add the test from the bugreport to tst_QHashFunctions.
Fixes: QTBUG-126659
Change-Id: Idb3f275f0409652d55b318d56092764371269c06
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
(cherry picked from commit 798c23189c7fb73629c1a98361cb1f50446fecf1)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
aefa427459