From 600d289000a3eb2d275bc8c69c3f449bcae44d72 Mon Sep 17 00:00:00 2001
From: rlar <rlar>
Date: Sun, 4 Oct 2015 19:22:23 +0200
Subject: [PATCH] frontend/define.c, ntharg(), avoid segfault when out of
 `args'

return NULL instead
---
 src/frontend/define.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/frontend/define.c b/src/frontend/define.c
index 3dc73d0ae..d9f7d3e50 100644
--- a/src/frontend/define.c
+++ b/src/frontend/define.c
@@ -420,6 +420,8 @@ ntharg(int num, struct pnode *args)
                 else
                     return (NULL);
             }
+            if (!ptry)
+                return NULL;
             ptry = ptry->pn_right;
         }