[Bug c++/109682] coroutines: ICE in morph_fn_to_coro on wrong return type for get_return_object_on_allocation_failure

[arsen at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109682

Arsen Arsenović <arsen at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2024-07-14
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
           Keywords|                            |ice-on-valid-code
                 CC|                            |arsen at gcc dot gnu.org

--- Comment #2 from Arsen Arsenović <arsen at gcc dot gnu.org> ---
GCC presumes get_return_object_on_allocation_failure returns the same type as
the get_return_object function.  it trips there.

(conjecture) I think this is valid and should cause a conversion, but that it
was left as a TODO.

the standard does not state otherwise and both Clang and MSVC appear to attempt
a conversion.