CExt #respond_to? calls a Ruby method instead of Primitive

Author: ssnickolay

lib/truffle/truffle/cext.rb

@@ -413,7 +413,7 @@ def rb_class_real(ruby_class)
   end
 
   def rb_obj_respond_to(object, id, priv)
-    Primitive.object_respond_to?(object, id, priv != 0)
+    object.respond_to?(id, priv != 0)
   end
 
   def rb_check_convert_type(obj, type_name, method)
@@ -843,7 +843,7 @@ def rb_funcall_with_block(recv, meth, args, block)
   end
 
   def rb_respond_to(object, name)
-    object.respond_to?(name)
+    rb_obj_respond_to(object, name, false);
   end
 
   def rb_funcallv_public(recv, meth, args)

src/main/c/cext/range.c

@@ -15,8 +15,8 @@ VALUE rb_range_new(VALUE beg, VALUE end, int exclude_end) {
  */
 int rb_range_values(VALUE range, VALUE *begp, VALUE *endp, int *exclp) {
   if (!rb_obj_is_kind_of(range, rb_cRange)) {
-    if (!RTEST(RUBY_INVOKE(range, "respond_to?", rb_intern("begin")))) return Qfalse;
-    if (!RTEST(RUBY_INVOKE(range, "respond_to?", rb_intern("end")))) return Qfalse;
+    if (!rb_respond_to(range, rb_intern("begin"))) return Qfalse;
+    if (!rb_respond_to(range, rb_intern("end"))) return Qfalse;
   }
 
   *begp = RUBY_INVOKE(range, "begin");