--- source/texk/web2c/luatexdir/lua/lepdflib.cc.orig    2018-11-01 22:46:43.868534355 +0000
+++ source/texk/web2c/luatexdir/lua/lepdflib.cc 2018-11-01 22:48:17.358815525 +0000
@@ -240,7 +240,7 @@
        if (uobj->pd != NULL && uobj->pd->pc != uobj->pc)
           pdfdoc_changed_error(L);
        uout = new_Attribute_userdata(L);
-       uout->d = new Attribute(n, nlen, (Object *)uobj->d);
+       uout->d = new Attribute((GooString)n, (Object *)uobj->d);
        uout->atype = ALLOC_LEPDF;
        uout->pc = uobj->pc;
        uout->pd = uobj->pd;