[Bug c++/118630] [modules] ICE in sort_cluster when streaming decltype(lambda) return type

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118630

--- Comment #1 from Nathaniel Shead <nshead at gcc dot gnu.org> ---
Actually this is not legal in named modules (this is an exposure of the
TU-local lambda type), but it is legal in header modules where it also ICEs.