[Bug c++/68584] nested generic lambda with trailing return type cases compiler crash

[Gaetano.Checinski at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68584

--- Comment #1 from Gaetano.Checinski at gmail dot com <Gaetano.Checinski at 
gmail dot com> ---
clang compiles this examples