From 9b6fe7e308b9368684347ca54833bb344496a029 Mon Sep 17 00:00:00 2001
From: itsmattkc <itsmattkc@gmail.com>
Date: Mon, 22 Mar 2021 12:15:13 +1100
Subject: [PATCH] track: null check when looking up a block's in/out time
 adjustment

Fixes #1517
---
 app/node/output/track/track.cpp | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/app/node/output/track/track.cpp b/app/node/output/track/track.cpp
index e553bad59..2b116c8c6 100644
--- a/app/node/output/track/track.cpp
+++ b/app/node/output/track/track.cpp
@@ -99,7 +99,9 @@ TimeRange Track::InputTimeAdjustment(const QString& input, int element, const Ti
   if (input == kBlockInput && element >= 0) {
     int cache_index = GetCacheIndexFromArrayIndex(element);
 
-    return TransformRangeForBlock(blocks_.at(cache_index), input_time);
+    if (cache_index > -1) {
+      return TransformRangeForBlock(blocks_.at(cache_index), input_time);
+    }
   }
 
   return Node::InputTimeAdjustment(input, element, input_time);
@@ -109,9 +111,12 @@ TimeRange Track::OutputTimeAdjustment(const QString& input, int element, const T
 {
   if (input == kBlockInput && element >= 0) {
     int cache_index = GetCacheIndexFromArrayIndex(element);
-    const rational& block_in = blocks_.at(cache_index)->in();
 
-    return input_time + block_in;
+    if (cache_index > -1) {
+      const rational& block_in = blocks_.at(cache_index)->in();
+
+      return input_time + block_in;
+    }
   }
 
   return Node::OutputTimeAdjustment(input, element, input_time);