https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99716
--- Comment #3 from Richard W.M. Jones <rjones at redhat dot com> --- FYI the original code is: https://github.com/libguestfs/libguestfs/blob/e0a11061035d47b118c95706240bcc17fd576edc/tests/mount-local/test-parallel-mount-local.c#L299-L335