From e6c25e84bc662797c7382500f136bb74874c2500 Mon Sep 17 00:00:00 2001
From: Luka Krajger <luka.krajger@gmail.com>
Date: Mon, 6 Jun 2016 16:11:11 +0200
Subject: [PATCH] Issue #381: Fixed segfaults at logging

* This patch correctly handles varargs being used two times in the
  same function.
---
 logging/logging.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/logging/logging.c b/logging/logging.c
index a06d783..4c24334 100644
--- a/logging/logging.c
+++ b/logging/logging.c
@@ -100,7 +100,11 @@ void error(const char *fmt, ...) {
   va_start(ap, fmt);
   debugMsg(MSG_ERROR, fmt, ap);
 #ifdef HAVE_SYSLOG_H
-  vsyslog(LOG_ERR, fmt, ap);
+  va_list apSyslog;
+  va_copy(apSyslog, ap);
+  va_start(apSyslog, fmt);
+  vsyslog(LOG_ERR, fmt, apSyslog);
+  va_end(apSyslog);
 #endif
   va_end(ap);
 }
@@ -117,7 +121,11 @@ void fatal(const char *fmt, ...) {
   va_start(ap, fmt);
   debugMsg(MSG_QUIET, fmt, ap);
 #ifdef HAVE_SYSLOG_H
-  vsyslog(LOG_CRIT, fmt, ap);
+  va_list apSyslog;
+  va_copy(apSyslog, ap);
+  va_start(apSyslog, fmt);
+  vsyslog(LOG_CRIT, fmt, apSyslog);
+  va_end(apSyslog);
   syslog(LOG_CRIT, "[server] Aborting...");
 #endif
   va_end(ap);