[Bug c/78584] Bug in GCC argument parser expandargv

[fw at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78584

--- Comment #5 from Florian Weimer <fw at gcc dot gnu.org> ---
Hmm.  Maybe it is file-system-specific.  I don't see the anomalous return
values on XFS and tmpfs.