From 81248f3899d7134298f79f4bd7dbc04ddc523de7 Mon Sep 17 00:00:00 2001
From: Bill Zissimopoulos <billziss@navimatics.com>
Date: Wed, 20 Oct 2021 09:04:20 +0100
Subject: [PATCH] dotnet: FileSystemHost: zero-init allocations made using
 Marshal.AllocHGlobal

---
 src/dotnet/FileSystemHost.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/dotnet/FileSystemHost.cs b/src/dotnet/FileSystemHost.cs
index d3423057..4723a494 100644
--- a/src/dotnet/FileSystemHost.cs
+++ b/src/dotnet/FileSystemHost.cs
@@ -1448,6 +1448,9 @@ namespace Fsp
             _FileSystemInterface.SetEa = SetEa;
 
             _FileSystemInterfacePtr = Marshal.AllocHGlobal(FileSystemInterface.Size);
+            /* Marshal.AllocHGlobal does not zero memory; we must do it ourselves! */
+            for (int Offset = 0; FileSystemInterface.Size > Offset; Offset += IntPtr.Size)
+                Marshal.WriteIntPtr(_FileSystemInterfacePtr, Offset, IntPtr.Zero);
             Marshal.StructureToPtr(_FileSystemInterface, _FileSystemInterfacePtr, false);
         }