[Bug c++/104981] [coroutines] Internal compiler error when promise object's constructor takes a base class of the object parameter

[iains at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104981

--- Comment #1 from Iain Sandoe <iains at gcc dot gnu.org> ---
the coroutines code appears to be passing reasonable input to the CTOR build
call.

coroutines.cc:4922:
        r = build_special_member_call (p, complete_ctor_identifier, NULL,
                                       promise_type, LOOKUP_NORMAL,
                                       tf_warning_or_error);


I think I will need some help from folks more knowledgeable about the lookup
code.