From 3ed57c3eff842888848f7c8651cb50b298bf7b41 Mon Sep 17 00:00:00 2001
From: Roman Fomin <rfomin@gmail.com>
Date: Sat, 30 Apr 2022 20:21:39 +0700
Subject: [PATCH] fix overlapping uses of global variables in p_map.c for mbf21
 complevel (#532)

---
 Source/p_map.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Source/p_map.c b/Source/p_map.c
index 03d222bc..48878e6f 100644
--- a/Source/p_map.c
+++ b/Source/p_map.c
@@ -2226,10 +2226,13 @@ void P_CreateSecNodeList(mobj_t *thing,fixed_t x,fixed_t y)
 
   // [FG] Overlapping uses of global variables in p_map.c
   // http://prboom.sourceforge.net/mbf-bugs.html
-   if (demo_compatibility)
+   if (demo_compatibility || mbf21)
    {
      tmthing = saved_tmthing;
      tmflags = saved_tmflags;
+   }
+   if (demo_compatibility)
+   {
      tmx = saved_tmx;
      tmy = saved_tmy;
      if (tmthing)