From 05c29ad593b8e004c901fdca1f1b75864c1ac91a Mon Sep 17 00:00:00 2001
From: Cameron Moore <moorereason@gmail.com>
Date: Sun, 15 Nov 2015 13:53:12 -0600
Subject: [PATCH] Return error if shortcode template.Tree is nil

If a shortcode template fails to compile, the template will be non-nil, but
template.Tree will be nil which caused a panic.
---
 hugolib/shortcode.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hugolib/shortcode.go b/hugolib/shortcode.go
index 5fb9b7cc8..e65a85989 100644
--- a/hugolib/shortcode.go
+++ b/hugolib/shortcode.go
@@ -343,6 +343,9 @@ Loop:
 			if tmpl == nil {
 				return sc, fmt.Errorf("Unable to locate template for shortcode '%s' in page %s", sc.name, p.BaseFileName())
 			}
+			if tmpl.Tree == nil {
+				return sc, fmt.Errorf("Template for shortcode '%s' failed to compile for page '%s'", sc.name, p.BaseFileName())
+			}
 			isInner = isInnerShortcode(tmpl)
 
 		case tScParam: