From ba10b8478961845efeeda6ff3b956d34b770c0b4 Mon Sep 17 00:00:00 2001
From: Michael Steenbeek <m.o.steenbeek@gmail.com>
Date: Sun, 26 Jul 2020 17:16:27 +0200
Subject: [PATCH] Fix #12478: Crash in track_block_get_next()

---
 src/openrct2/ride/Ride.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/openrct2/ride/Ride.cpp b/src/openrct2/ride/Ride.cpp
index a0238c7384..eecb6c24a3 100644
--- a/src/openrct2/ride/Ride.cpp
+++ b/src/openrct2/ride/Ride.cpp
@@ -555,6 +555,9 @@ bool track_block_get_next_from_zero(
  */
 bool track_block_get_next(CoordsXYE* input, CoordsXYE* output, int32_t* z, int32_t* direction)
 {
+    if (input == nullptr || input->element == nullptr)
+        return false;
+
     auto inputElement = input->element->AsTrack();
     if (inputElement == nullptr)
         return false;