From a9c613e87d93c919e2301753cea120ec057cf492 Mon Sep 17 00:00:00 2001
From: Nicolas Williams <nico@cryptonector.com>
Date: Sat, 27 Dec 2014 16:51:39 -0600
Subject: [PATCH] Don't force C API users to set input cb

---
 builtin.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/builtin.c b/builtin.c
index 9a5660a7..0bf7b9f0 100644
--- a/builtin.c
+++ b/builtin.c
@@ -867,6 +867,8 @@ static jv f_input(jq_state *jq, jv input) {
   jq_input_cb cb;
   void *data;
   jq_get_input_cb(jq, &cb, &data);
+  if (cb == NULL)
+    return jv_invalid_with_msg(jv_string("break"));
   jv v = cb(jq, data);
   if (jv_is_valid(v) || jv_invalid_has_msg(jv_copy(v)))
     return v;