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?
