From 68f8c18fbb4f9c845f392fd36f292059c4db1420 Mon Sep 17 00:00:00 2001
From: "Michael I. Bushnell" <mib@gnu.org>
Date: Tue, 5 Apr 1994 20:26:55 +0000
Subject: Formerly pgrp.c.~3~

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

diff --git a/proc/pgrp.c b/proc/pgrp.c
index ea500fee..ea64ede7 100644
--- a/proc/pgrp.c
+++ b/proc/pgrp.c
@@ -371,7 +371,10 @@ join_pgrp (struct proc *p)
     pg->pg_plist->p_gprevp = &p->p_gnext;
   pg->pg_plist = p;
   
-  if (p->p_parent->p_pgrp != pg
+  /* Processes 0 and 1 have no parent; they count as orphaned
+     processes always. */
+  if (p->p_parent
+      && p->p_parent->p_pgrp != pg
       && p->p_parent->p_pgrp->pg_session == pg->pg_session)
     pg->pg_orphcnt++;
 }
-- 
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