From dd30a389a065c122cae06920dd92dff373fe26fd Mon Sep 17 00:00:00 2001
From: Daniel Parks <danielrparks@utexas.edu>
Date: Wed, 26 Apr 2023 21:41:10 -0500
Subject: [PATCH] TAStudio/PatternsForm: Block deletion of loop entry which
 would cause a crash

---
 src/BizHawk.Client.EmuHawk/tools/TAStudio/PatternsForm.cs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/BizHawk.Client.EmuHawk/tools/TAStudio/PatternsForm.cs b/src/BizHawk.Client.EmuHawk/tools/TAStudio/PatternsForm.cs
index 6e83cfed88..ec854b8d56 100644
--- a/src/BizHawk.Client.EmuHawk/tools/TAStudio/PatternsForm.cs
+++ b/src/BizHawk.Client.EmuHawk/tools/TAStudio/PatternsForm.cs
@@ -88,6 +88,10 @@ namespace BizHawk.Client.EmuHawk
 
 		private void DeleteButton_Click(object sender, EventArgs e)
 		{
+			if (PatternList.SelectedIndex >= _counts.Count)
+			{
+				return;
+			}
 			_counts.RemoveAt(PatternList.SelectedIndex);
 			_values.RemoveAt(PatternList.SelectedIndex);
 			UpdatePattern();