[Bug fortran/43256] [OOP] TBP with missing optional arg

[janus at gcc dot gnu dot org]

------- Comment #6 from janus at gcc dot gnu dot org  2010-03-05 09:36 -------
(In reply to comment #5)
> All of these throw error messages like
> 
> ABSTRACT INTERFACE '...' must not be referenced at (1)

This was PR41873 and was fixed by querying "expr->value.function.name", which
fails now. We should find a better way to silence this error message for
polymorphic calls.


> Type mismatch in argument '...' at (1); passed CLASS(...) to CLASS(...)

This one is a bit more tricky, but understandable. It is not a problem of the
one-line patch shown above, but of the implementation of polymorphic calls:
When doing a polymorphic call with 'dynamic type /= declared type' of the
passed object and an overridden TBP, we have to convert the passed object to a
CLASS of the dynamic type.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43256