[Bug c++/109241] [12/13/14 Regression] ICE Segmentation fault for statement expression with a local type inside inside a generic lambda inside a generic lambda since r13-6722-gb323f52ccf966800

["rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109241

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[12/13 Regression] ICE      |[12/13/14 Regression] ICE
                   |Segmentation fault for      |Segmentation fault for
                   |statement expression with a |statement expression with a
                   |local type inside inside a  |local type inside inside a
                   |generic lambda inside a     |generic lambda inside a
                   |generic lambda since        |generic lambda since
                   |r13-6722-gb323f52ccf966800  |r13-6722-gb323f52ccf966800
                 CC|                            |rguenth at gcc dot gnu.org

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Marek Polacek from comment #5)
> In GCC 12 this test still ICEs:
> 
> template<class T>
> void foo(T) {
>     [](auto){
>         [] {
>             struct X {};
>         };
>     };
> }
> 
> template void foo(int);

How so?  I can't reproduce.  Likewise for PR109850.  Is trunk actually fixed?
Please update known-to-work.