https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84141
--- Comment #25 from Jürgen Reuter <juergen.reuter at desy dot de> --- The other errors actually appear in I/O procedures of external libraries that we link to our code. It would be hard(er) to come up with a test case here. Hope you can fix all of that, keeping fingers crossed.
