From 4be60421c81ece44c8cc0cf27a82b024eb359579 Mon Sep 17 00:00:00 2001
From: Luke Dashjr <luke-jr+git@utopios.org>
Date: Thu, 11 Aug 2016 06:57:42 +0000
Subject: [PATCH] Bugfix: Refuse to accept an unparsable vbrequired

---
 blkmaker_jansson.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/blkmaker_jansson.c b/blkmaker_jansson.c
index cbce12f..d3507cf 100644
--- a/blkmaker_jansson.c
+++ b/blkmaker_jansson.c
@@ -305,7 +305,11 @@ const char *blktmpl_add_jansson(blktemplate_t *tmpl, const json_t *json, time_t
 		
 		v = json_object_get(json, "vbrequired");
 		if (v && json_is_number(v)) {
-			tmpl->vbrequired = json_number_value(v);
+			double tmpd = json_number_value(v);
+			tmpl->vbrequired = tmpd;
+			if (tmpl->vbrequired != tmpd) {
+				return "Unparsable vbrequired";
+			}
 		}
 	}
 	else