From: Pasi Kallinen <paxed@alt.org>
Date: Tue, 1 Mar 2022 13:31:22 +0000 (+0200)
Subject: Prevent segfault trying to make non-existent trap seen
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=473ae4a6a0d5287499cbbdad6c5ae8c01010fb20;p=nethack

Prevent segfault trying to make non-existent trap seen
---

diff --git a/src/mklev.c b/src/mklev.c
index 1471013ff..3e387bd96 100644
--- a/src/mklev.c
+++ b/src/mklev.c
@@ -1468,7 +1468,7 @@ mktrap(int num, int mktrapflags, struct mkroom *croom, coord *tm)
 
     if (kind == WEB && !(mktrapflags & MKTRAP_NOSPIDERONWEB))
         (void) makemon(&mons[PM_GIANT_SPIDER], m.x, m.y, NO_MM_FLAGS);
-    if ((mktrapflags & MKTRAP_SEEN))
+    if (t && (mktrapflags & MKTRAP_SEEN))
         t->tseen = TRUE;
 
     /* The hero isn't the only person who's entered the dungeon in