From e6d100354317475412161a487ffbcf36582115c5 Mon Sep 17 00:00:00 2001
From: Jonathan Wakely <jwakely@redhat.com>
Date: Thu, 21 Oct 2021 14:17:43 +0100
Subject: [PATCH] libcody: Avoid double-free

If the listen call fails then 'goto fail' will jump to that label and
use freeaddrinfo again. Set the pointer to null to prevent that.

libcody/ChangeLog:

	* netserver.cc (ListenInet6): Set pointer to null after
	deallocation.
---
 libcody/netserver.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libcody/netserver.cc b/libcody/netserver.cc
index 30202c5..0499b57 100644
--- a/libcody/netserver.cc
+++ b/libcody/netserver.cc
@@ -140,6 +140,7 @@ int ListenInet6 (char const **e, char const *name, int port, unsigned backlog)
 
  listen:;
   freeaddrinfo (addrs);
+  addrs = nullptr;
 
   if (listen (fd, backlog ? backlog : 17) < 0)
     {
-- 
2.7.4