CxxClassDefinitions.rusttpl in gecoder-with-gecode-1.1.0

- old
+ new

@@ -24,12 +24,12 @@
    if( ! is_!class_varname!(rval) )
    {
      VALUE klass = rb_funcall(rval, rb_intern("class"), 0);
      
      if( argn > 0)
-       rb_raise(rb_eArgError, "Expecting !c_class_name! given %s for argument %d", RSTRING(rb_funcall(klass, rb_intern("to_s"), 0))->ptr, argn);
+       rb_raise(rb_eArgError, "Expecting !c_class_name! given %s for argument %d", RSTRING_PTR(RSTRING(rb_funcall(klass, rb_intern("to_s"), 0))), argn);
      else
-		rb_raise(rb_eArgError, "Expecting !c_class_name! given %s", RSTRING(rb_funcall(klass, rb_intern("to_s"), 0))->ptr, argn);
+		rb_raise(rb_eArgError, "Expecting !c_class_name! given %s", RSTRING_PTR(RSTRING(rb_funcall(klass, rb_intern("to_s"), 0))), argn);
      return 0;
    }
    
    !c_class_name!* ptr;
    Data_Get_Struct(rval, !c_class_name!, ptr);