From e746e0bbbc4439e07c1217c6f12110638a8ea565 Mon Sep 17 00:00:00 2001
From: Marcello Stanisci <stanisci.m@gmail.com>
Date: Fri, 18 May 2018 14:49:56 +0200
Subject: diagnostics

---
 src/exchange/taler-exchange-httpd_responses.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/exchange/taler-exchange-httpd_responses.c b/src/exchange/taler-exchange-httpd_responses.c
index 99ee08a80..f13352e12 100644
--- a/src/exchange/taler-exchange-httpd_responses.c
+++ b/src/exchange/taler-exchange-httpd_responses.c
@@ -148,6 +148,13 @@ TEH_RESPONSE_reply_json (struct MHD_Connection *connection,
 			 JSON_INDENT(2));
   if (NULL == json_str)
   {
+    /**
+     * This log helps to figure out which
+     * function called this one and assert-failed.
+     */
+    TALER_LOG_ERROR ("Aborting json-packing for HTTP code: %u\n",
+                     response_code);
+
     GNUNET_assert (0);
     return MHD_NO;
   }
-- 
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