[Bug fortran/82064] [7/8 Regression] [OOP] multiple incompatible definitions of extended derived type via module use

[janus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82064

--- Comment #5 from janus at gcc dot gnu.org ---
(In reply to Paul Thomas from comment #4)
> (In reply to janus from comment #3)
> > It appears that the regression has been introduced by r241450, which was the
> > fix for PR 69834. Reverting it, in particular the changes to
> > resolve_select_type, makes the error go away.
> 
> Strangely, my GNU Fortran (GCC) 8.0.0 20170830 gives me two "OK"s :-)

Also on the version with separate files?


> That said, this is a repeat of another recent bug (sorry, I am rushing off
> to work - no time to find the number). I posted a work around, which
> translates in this case to:
> 
> [..]
> 
> The permanent fix is to make sure that the vtables get produced
> unconditionally for module derived types.

I thought we already did that, but probably we're still missing some cases?