From b2d248c1caacf411f4b0433a807e7497a6f8e1a0 Mon Sep 17 00:00:00 2001
From: Jb Evain <jb@evain.net>
Date: Fri, 2 Aug 2019 10:19:05 -0700
Subject: [PATCH] Avoid exceptions for malformed debug headers

---
 Mono.Cecil.PE/ImageReader.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Mono.Cecil.PE/ImageReader.cs b/Mono.Cecil.PE/ImageReader.cs
index 6fb5e1c02..9731ba90b 100644
--- a/Mono.Cecil.PE/ImageReader.cs
+++ b/Mono.Cecil.PE/ImageReader.cs
@@ -350,7 +350,7 @@ void ReadDebugHeader ()
 					PointerToRawData = ReadInt32 (),
 				};
 
-				if (directory.PointerToRawData == 0) {
+				if (directory.PointerToRawData == 0 || directory.SizeOfData < 0) {
 					entries [i] = new ImageDebugHeaderEntry (directory, Empty<byte>.Array);
 					continue;
 				}