From 203311dd0b3164902613c5696d27f80dff629c32 Mon Sep 17 00:00:00 2001
From: Siegfried Pammer <siegfriedpammer@gmail.com>
Date: Tue, 28 Nov 2017 10:37:50 +0100
Subject: [PATCH] Do not crash in BlockContainer.CheckInvariant

---
 ICSharpCode.Decompiler/IL/Instructions/BlockContainer.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ICSharpCode.Decompiler/IL/Instructions/BlockContainer.cs b/ICSharpCode.Decompiler/IL/Instructions/BlockContainer.cs
index 428ecd8d3..a726c0e8f 100644
--- a/ICSharpCode.Decompiler/IL/Instructions/BlockContainer.cs
+++ b/ICSharpCode.Decompiler/IL/Instructions/BlockContainer.cs
@@ -179,8 +179,8 @@ namespace ICSharpCode.Decompiler.IL
 		internal override void CheckInvariant(ILPhase phase)
 		{
 			base.CheckInvariant(phase);
-			Debug.Assert(EntryPoint == Blocks[0]);
-			Debug.Assert(!IsConnected || EntryPoint.IncomingEdgeCount >= 1);
+			Debug.Assert(Blocks.Count > 0 && EntryPoint == Blocks[0]);
+			Debug.Assert(!IsConnected || EntryPoint?.IncomingEdgeCount >= 1);
 			Debug.Assert(Blocks.All(b => b.HasFlag(InstructionFlags.EndPointUnreachable)));
 			Debug.Assert(Blocks.All(b => b.Kind == BlockKind.ControlFlow)); // this also implies that the blocks don't use FinalInstruction
 			Block bodyStartBlock;