From 451b53daeb64b85eab999b29dba5fd9c78598422 Mon Sep 17 00:00:00 2001
From: Mark Pizzolato <mark@infocomm.com>
Date: Tue, 24 May 2016 08:53:05 -0700
Subject: [PATCH] TMXR: Allow Line based logging to be both disabled and
enabled before attach
Previously attempts to disable logging for an unattached mux (or line) could
crash the simulator.
---
sim_tmxr.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sim_tmxr.c b/sim_tmxr.c
index 4397b76e..6efff478 100644
--- a/sim_tmxr.c
+++ b/sim_tmxr.c
@@ -4456,7 +4456,8 @@ if (lp->txlog) { /* logging? */
lp->txlog = NULL;
lp->txlogname = NULL;
}
-lp->mp->uptr->filename = tmxr_mux_attach_string (lp->mp->uptr->filename, lp->mp);
+if (mp->uptr)
+ lp->mp->uptr->filename = tmxr_mux_attach_string (lp->mp->uptr->filename, lp->mp);
return SCPE_OK;
}