From 0e72ba4b64673746bc9e3b8f13cbd51da92592ae Mon Sep 17 00:00:00 2001
From: Ben Loftis <ben@harrisonconsoles.com>
Date: Sun, 11 Feb 2018 12:05:23 -0600
Subject: Fix potential crash in snap_to_grid (grid-mark list is empty).

---
 gtk2_ardour/editor.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gtk2_ardour/editor.cc b/gtk2_ardour/editor.cc
index c56cd94d1d..d911cf648b 100644
--- a/gtk2_ardour/editor.cc
+++ b/gtk2_ardour/editor.cc
@@ -2710,6 +2710,8 @@ check_best_snap ( samplepos_t presnap, samplepos_t &test, samplepos_t &dist, sam
 samplepos_t
 Editor::snap_to_grid (vector<ArdourCanvas::Ruler::Mark> marks, samplepos_t presnap, RoundMode direction)
 {
+	if  (marks.empty() ) return presnap;
+
 	samplepos_t before;
 	samplepos_t after;
 	samplepos_t test;
-- 
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