/* -*- C++ -*-
This file is part of LilyPond, the GNU music typesetter.
- Copyright (C) 2005--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ Copyright (C) 2005--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
LilyPond is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
return (Super::unsmob (arg))->mark_smob ();
}
+template <class Super>
+int
+Smob_base<Super>::print_trampoline (SCM arg, SCM port, scm_print_state *p)
+{
+ return (Super::unsmob (arg))->print_smob (port, p);
+}
+
template <class Super>
SCM
Smob_base<Super>::register_ptr (Super *p)
template <class Super>
int
-Smob_base<Super>::print_smob (SCM, SCM p, scm_print_state *)
+Smob_base<Super>::print_smob (SCM p, scm_print_state *)
{
scm_puts ("#<", p);
scm_puts (smob_name_.c_str (), p);
if (&Super::free_smob != &Smob_base<Super>::free_smob)
scm_set_smob_free (smob_tag_, Super::free_smob);
- if (&Super::mark_smob != &Smob_base<Super>::mark_smob)
+ // Old GCC versions get their type lattice for pointers-to-members
+ // tangled up to a degree where we need to typecast _both_ covariant
+ // types in order to be able to compare them. The other comparisons
+ // are for static member functions and thus are ordinary function
+ // pointers which work without those contortions.
+ if (static_cast<SCM (Super::*)()>(&Super::mark_smob) !=
+ static_cast<SCM (Super::*)()>(&Smob_base<Super>::mark_smob))
scm_set_smob_mark (smob_tag_, Super::mark_trampoline);
- scm_set_smob_print (smob_tag_, Super::print_smob);
+ scm_set_smob_print (smob_tag_, Super::print_trampoline);
if (&Super::equal_p != &Smob_base<Super>::equal_p)
scm_set_smob_equalp (smob_tag_, Super::equal_p);
if (Super::type_p_name_ != 0)