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-rw-r--r--internal.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/internal.h b/internal.h
index 82890b04da..aded941637 100644
--- a/internal.h
+++ b/internal.h
@@ -183,6 +183,7 @@ VALUE rb_int_pred(VALUE num);
/* object.c */
VALUE rb_obj_equal(VALUE obj1, VALUE obj2);
+VALUE rb_class_search_ancestor(VALUE klass, VALUE super);
/* parse.y */
VALUE rb_parser_get_yydebug(VALUE);