c++: excessive satisfaction in check_methods [PR108579]
In check_methods we're unnecessarily checking satisfaction for all
constructors and assignment operators, even those that don't look like
copy/move special members. In the testcase below this manifests as an
unstable satisfaction error because the satisfaction result is first
determined to be false during check_methods (since A<int> is incomplete
at this point) and later true after completion of A<int>.
This patch fixes this simply by swapping the order of the
constraint_satisfied_p and copy/move_fn_p tests.
PR c++/108579
gcc/cp/ChangeLog:
* class.cc (check_methods): Swap order of constraints_satisfied_p
and copy/move_fn_p tests.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/concepts-pr108579.C: New test.