[Bug c++/115706] Compiling headers as header units fails depending on order.

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115706

--- Comment #4 from Sam James <sjames at gcc dot gnu.org> ---
I'd really suggest filing one bug per issue in future. Making it very clear
what a specific bug is about and how to reproduce with a standalone attachment
is good too (your last issue at least seems to need your project, but not
looked properly).

Modules are considered to be experimental still and I'd expect someone to look
but not immediately.