From 711471e9dd9df2af58f097b4248b3200a86d8c28 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Thu, 1 Mar 2018 11:08:38 +0200
Subject: [PATCH] Fixed potential crash during state validation

https://forum.zdoom.org/viewtopic.php?t=57116

The problem was caused by missing state label in conjunction with incomplete class

actor A : ArmorBonus
{
    Inventory.ForbiddenTo "Missing"
}

actor B : Pistol
{
    states
    {
        TNT1 A 0
        Loop
    }
}
---
 src/info.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/info.h b/src/info.h
index 8bd188730..69912534f 100644
--- a/src/info.h
+++ b/src/info.h
@@ -344,7 +344,7 @@ public:
 	bool OwnsState(const FState *state)
 	{
 		auto i = ActorInfo();
-		return state >= i->OwnedStates && state < i->OwnedStates + i->NumOwnedStates;
+		return i != nullptr && state >= i->OwnedStates && state < i->OwnedStates + i->NumOwnedStates;
 	}
 
 	PClassActor *GetReplacement(bool lookskill=true);