https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122774
--- Comment #5 from d7d1cd <d7d1cd at mail dot ru> ---
(In reply to Nathaniel Shead from comment #4)
> Thanks, though that doesn't appear to reproduce the ICE
A shorter example that reproduces ICE:
$ cat module.ixx
module;
#include <cstdio>
export module M;
export using ::std::scanf;
$ cat main.cc
import M;
#include <cstdio>
int main() {}
