From 4f1bb14732fc458808a673ed7eff2b0fb08d7943 Mon Sep 17 00:00:00 2001
From: toaster <rollerorbital@gmail.com>
Date: Fri, 16 Sep 2022 15:07:12 +0100
Subject: [PATCH] Extra catch to prevent SIGSEGV

---
 src/g_game.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/g_game.c b/src/g_game.c
index c8fb69f46..b020179fa 100644
--- a/src/g_game.c
+++ b/src/g_game.c
@@ -4599,6 +4599,12 @@ void G_InitNew(UINT8 pencoremode, INT32 map, boolean resetplayer, boolean skippr
 	// internal game map
 	// well this check is useless because it is done before (d_netcmd.c::command_map_f)
 	// but in case of for demos....
+	if (!mapname)
+	{
+		I_Error("Internal game map with ID %d not found\n", map);
+		Command_ExitGame_f();
+		return;
+	}
 	if (mapheaderinfo[map-1]->lumpnum == LUMPERROR)
 	{
 		I_Error("Internal game map '%s' not found\n", mapname);