I hope I'm using this mailing list thing right. I know you said you looked in duckmatic, but this bit of code looks right to me: https://github.com/synfig/synfig/blob/master/synfig-studio/src/gui/duckmatic.cpp#L2653 I don't know much about how ducks work, though, so maybe that's not what you're looking for.
Looking at the stack trace, however, I think the source of the bug might be here: https://github.com/synfig/synfig/blob/master/synfig-studio/src/synfigapp/actions/valuedesclink.cpp#L124 It's trying to check if the input ValueDesc has a sub_name, but if it doesn't have a parent ValueDesc, it won't have a sub_name. So changing the condition to this... value_desc.parent_is_value_desc() && !value_desc.get_sub_name().empty() ...may work. Just my two cents. On Fri, Sep 4, 2015 at 8:26 AM, <d.j....@free.fr> wrote: > Hello, > > I'm looking at fixing : > #889 - Crash on linking regular vertice and width point center TYPE_WIDTH > http://www.synfig.org/issues/thebuggenie/synfig/issues/889 > > the crash come the assert(parent_is_value_desc()) from here : > > https://github.com/synfig/synfig/blob/master/synfig-studio/src/synfigapp/value_desc.h#L340 > > inside this call stack : > > __assert_fail() at 0xb56a57d7 > synfigapp::ValueDesc::get_sub_name() at value_desc.h:340 0x86e6a5f > synfigapp::Action::ValueDescLink::set_param() at > valuedesclink.cpp:124 0xb7d8ff1c > synfigapp::Action::Base::set_param_list() at action.cpp:377 > 0xb7e1c1a5 > studio::Instance::process_action() at instance.cpp:1 077 0x88952f4 > sigc::bound_mem_functor2<void, studio::Instance, std::string, > synfigapp::Action::ParamList>::operator() at mem_fun.h:1 917 0x88a5f13 > <...more frames...> > > The width point is treated has a composite value_node (but should'nt maybe > ?) and i can't figure where/when width point are effectively created... > > > 1) Width point duck .... when and where are they created ? (i have checked > inside state_xxxx , and duckmatic ... ) > 2) Maybe Width points shouldn't be treated has compisite valuenode .... ? > > > see'ya! > > > ------------------------------------------------------------------------------ > _______________________________________________ > Synfig-devl mailing list > Synfig-devl@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/synfig-devl >
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