From 8de12a40158683c665fc0bf242b2fc150d3ad538 Mon Sep 17 00:00:00 2001
From: nick_m <mainsbridge@gmail.com>
Date: Thu, 9 Jun 2016 05:16:38 +1000
Subject: [PATCH] Possible fix for memory pool problem in session click.

---
 libs/ardour/tempo.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libs/ardour/tempo.cc b/libs/ardour/tempo.cc
index d46656c4c7..c39a78ff7f 100644
--- a/libs/ardour/tempo.cc
+++ b/libs/ardour/tempo.cc
@@ -2940,6 +2940,11 @@ TempoMap::get_grid (vector<TempoMap::BBTPoint>& points,
 	if (cnt < 0.0) {
 		cnt = 0.0;
 	}
+
+	if (frame_at_beat_locked (_metrics, cnt) >= upper) {
+		return;
+	}
+
 	while (pos < upper) {
 		pos = frame_at_beat_locked (_metrics, cnt);
 		const TempoSection tempo = tempo_section_at_frame_locked (_metrics, pos);