From d9e968ebea1593d4621fb9c7b6058021f22340c5 Mon Sep 17 00:00:00 2001
From: Miles Bader <miles@gnu.org>
Date: Sat, 8 Jul 1995 23:00:27 +0000
Subject: (ports_allocate_port): Properly add PI to CLASS's port list when the 
  list is empty.

---
 libports/allocate-port.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'libports')

diff --git a/libports/allocate-port.c b/libports/allocate-port.c
index 03839635..d3581db0 100644
--- a/libports/allocate-port.c
+++ b/libports/allocate-port.c
@@ -68,7 +68,8 @@ void *ports_allocate_port (struct port_bucket *bucket,
   assert_perror (err);
   pi->next = class->ports;
   pi->prevp = &class->ports;
-  class->ports->prevp = &pi->next;
+  if (class->ports)
+    class->ports->prevp = &pi->next;
   class->ports = pi;
   bucket->count++;
   class->count++;
-- 
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