Don't assume the value description is a linkable value node.

[synfig.git] / synfig-studio / src / synfigapp / actions / valuedesclink.cpp

diff --git a/synfig-studio/src/synfigapp/actions/valuedesclink.cpp b/synfig-studio/src/synfigapp/actions/valuedesclink.cpp
index 6afde69..a9959c1 100644 (file)
--- a/synfig-studio/src/synfigapp/actions/valuedesclink.cpp
+++ b/synfig-studio/src/synfigapp/actions/valuedesclink.cpp
@@ -316,7 +316,9 @@ Action::ValueDescLink::prepare()
 
        std::list<ValueDesc>::iterator iter;
        // Gets the scalar value of the current value node
-       Real current_scalar(value_desc_list.begin()->get_scalar());
+       Real current_scalar(0);
+       if(value_desc_list.begin()->parent_is_linkable_value_node())
+               current_scalar=value_desc_list.begin()->get_scalar();
        bool found_inverse(false);
        // Check if we are dealing the case of linking differnt types of tangents
        for(iter=value_desc_list.begin();iter!=value_desc_list.end();++iter)