altos/lisp: Deal with memory compation in the middle of operations

[fw/altos] / src / lisp / ao_lisp_cons.c

diff --git a/src/lisp/ao_lisp_cons.c b/src/lisp/ao_lisp_cons.c
index 855079b8b483022040a5124bef3b4ea0c77cf09e..cd8a8d1d03b9920716fece9c834e101f3d70b55f 100644 (file)
--- a/src/lisp/ao_lisp_cons.c
+++ b/src/lisp/ao_lisp_cons.c
@@ -67,7 +67,13 @@ const struct ao_lisp_type ao_lisp_cons_type = {
 struct ao_lisp_cons *
 ao_lisp_cons_cons(ao_poly car, struct ao_lisp_cons *cdr)
 {
-       struct ao_lisp_cons     *cons = ao_lisp_alloc(sizeof (struct ao_lisp_cons));
+       struct ao_lisp_cons     *cons;
+
+       ao_lisp_root_add(&ao_lisp_cons_type, &cdr);
+       ao_lisp_root_poly_add(&car);
+       cons = ao_lisp_alloc(sizeof (struct ao_lisp_cons));
+       ao_lisp_root_clear(&car);
+       ao_lisp_root_clear(&cdr);
        if (!cons)
                return NULL;
        cons->car = car;