[Bug c++/96110] Function declarator with a trailing return type "auto" should be allowed in try-catch block

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96110

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This isn't specific to catch handlers, other compilers accept that nonsense
function declaration in various contexts, and GCC rejects them all:

using F = auto () -> auto;
template<typename T> struct X { };
X<auto () -> auto> x;


But if you ask Clang to generate debug info for this code it ICEs.