From 8d4d6731f56f9b1163f19d2455e8998aa0499afd Mon Sep 17 00:00:00 2001
From: Damien George <damien.p.george@gmail.com>
Date: Sat, 19 Mar 2016 21:36:32 +0000
Subject: py/parse: When looking up consts, check they exist before checking
 type.

---
 py/parse.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'py/parse.c')

diff --git a/py/parse.c b/py/parse.c
index d1f29139a2..b57e82d459 100644
--- a/py/parse.c
+++ b/py/parse.c
@@ -620,7 +620,7 @@ STATIC bool fold_constants(parser_t *parser, const rule_t *rule, size_t num_args
         }
         mp_obj_t dest[2];
         mp_load_method_maybe(elem->value, q_attr, dest);
-        if (!(MP_OBJ_IS_INT(dest[0]) && dest[1] == MP_OBJ_NULL)) {
+        if (!(dest[0] != MP_OBJ_NULL && MP_OBJ_IS_INT(dest[0]) && dest[1] == MP_OBJ_NULL)) {
             return false;
         }
         arg0 = dest[0];
-- 
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