[Bug c++/114685] [modules] ICE when exporting a type through a different alias then one declared in GMF

[m.cencora at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114685

--- Comment #4 from m.cencora at gmail dot com ---
I've stumbled upon a related error when trying to export std::vector after
inclusion of <format> in GMF:

module;

namespace std
{
class vector;
namespace __format {
using std::vector;
}
}

export module std;

export namespace std {
#ifdef WORKAROUND
namespace __format {}
#endif
    using std::vector;
}