libstdc++: Reverse arguments in constraint for std::optional's <=> [PR104606]
This is a workaround for a possible compiler bug that causes constraint
recursion in the operator<=>(const optional<T>&, const U&) overload.
libstdc++-v3/ChangeLog:
PR libstdc++/104606
* include/std/optional (operator<=>(const optional<T>&, const U&)):
Reverse order of three_way_comparable_with template arguments.
* testsuite/20_util/optional/relops/104606.cc: New test.
(cherry picked from commit
7f65d8267fbfd19cf21a3dc71d27e989e75044a3)