1 files changed, 41 insertions, 0 deletions
diff --git a/tests/src/JIT/Regression/JitBlue/GitHub_23791/GitHub_23791.cs b/tests/src/JIT/Regression/JitBlue/GitHub_23791/GitHub_23791.cs
new file mode 100644
index 0000000000..e724823c34
--- /dev/null
+++ b/tests/src/JIT/Regression/JitBlue/GitHub_23791/GitHub_23791.cs
@@ -0,0 +1,41 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+//
+
+using System;
+using System.Runtime.CompilerServices;
+
+// The jit should null check 'this' in NextElement
+
+unsafe struct GitHub_23791
+{
+    fixed byte A[10];
+
+    [MethodImpl(MethodImplOptions.NoInlining)]
+    byte NextElement(int i) => A[1+i];
+
+    static int Main() 
+    {
+        int result = -1;
+        GitHub_23791* x = null;
+        bool threw = true;
+
+        try
+        {
+            byte t = x->NextElement(100000);
+            threw = false;
+        }
+        catch (NullReferenceException)
+        {
+            result = 100;
+        }
+
+        if (!threw)
+        {
+            Console.WriteLine($"FAIL: did not throw an exception");
+        }
+
+        return result;
+    }
+}