From 59e228439fa073a81ebad575c0e191d2d8a88ee2 Mon Sep 17 00:00:00 2001
From: itsmattkc <itsmattkc@gmail.com>
Date: Sun, 18 Jul 2021 11:05:33 -0700
Subject: [PATCH] cache: ignore shifts beyond map size

Fixes crash
---
 app/render/framehashcache.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/app/render/framehashcache.cpp b/app/render/framehashcache.cpp
index 6317e4a7a..5f0b9a921 100644
--- a/app/render/framehashcache.cpp
+++ b/app/render/framehashcache.cpp
@@ -256,6 +256,10 @@ void FrameHashCache::ShiftEvent(const rational &from, const rational &to)
   int64_t to_ts = ToTimestamp(to);
   int64_t from_ts = ToTimestamp(from);
 
+  if (from_ts >= GetMapSize()) {
+    return;
+  }
+
   if (diff_is_negative) {
     // We're moving the frames starting at `from` backwards to where `to` is
     if (to_ts < GetMapSize()) {