From b9d781e0b268a49cd0576e5f1cd6813dc177fad0 Mon Sep 17 00:00:00 2001
From: Pasi Kallinen <paxed@alt.org>
Date: Tue, 6 Jan 2026 20:58:13 +0200
Subject: [PATCH] Fix segfault when carried box explodes

Opening a trapped box in inventory, if the box exploded and was
not destroyed, then temporary variable otmp was pointing to null.
---
 src/trap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/trap.c b/src/trap.c
index a5602cd5a..41f2cad94 100644
--- a/src/trap.c
+++ b/src/trap.c
@@ -6400,7 +6400,7 @@ chest_trap(
         bot(); /* to get immediate botl re-display */
     }
 
-    otmp->tknown = 1; /* hero knows chest is no longer trapped */
+    obj->tknown = 1; /* hero knows chest is no longer trapped */
     return FALSE;
 }