https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71930
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution|--- |INVALID
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
What makes you think that this is a bug? If the source is on stdin, then
obviously file extension determination of the source type doesn't apply, so you
need to supply it explicitly, using -xc or -xc++ etc.
Without -x and with - input, the driver errors unless -E is used, in which case
it is always the C preprocessing. The driver doesn't try to guess that because
you've used some C++-ish option you want C++ preprocessing. Just use -xc++.
