From ac05f0a6b2d0e2c81c6b91ebe2853be11750cbdd Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Sat, 30 Jan 2021 15:09:35 +0200
Subject: [PATCH 1/2] - added initialization of linked sectors

Resizing of linked sectors arrays during serialization could lead to processing of pointers to junk data

https://forum.zdoom.org/viewtopic.php?t=71252
---
 src/gamedata/r_defs.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/gamedata/r_defs.h b/src/gamedata/r_defs.h
index 4c95a0424..6cb8f9e77 100644
--- a/src/gamedata/r_defs.h
+++ b/src/gamedata/r_defs.h
@@ -522,6 +522,12 @@ struct FLinkedSector
 {
 	sector_t *Sector;
 	int Type;
+	
+	FLinkedSector(sector_t *sector = nullptr, int type = 0)
+	: Sector(sector)
+	, Type(type)
+	{
+	}
 };
 
 

From 7e02c5f2105fe89a902754df3b0c3fde9913ed44 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Sat, 30 Jan 2021 15:49:55 +0200
Subject: [PATCH 2/2] - replaced linked sector constructor with default
 initializers

---
 src/gamedata/r_defs.h | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/src/gamedata/r_defs.h b/src/gamedata/r_defs.h
index 6cb8f9e77..a1bca88a1 100644
--- a/src/gamedata/r_defs.h
+++ b/src/gamedata/r_defs.h
@@ -520,14 +520,8 @@ struct FDynamicColormap;
 
 struct FLinkedSector
 {
-	sector_t *Sector;
-	int Type;
-	
-	FLinkedSector(sector_t *sector = nullptr, int type = 0)
-	: Sector(sector)
-	, Type(type)
-	{
-	}
+	sector_t *Sector = nullptr;
+	int Type = 0;
 };