From c0838068e374d5931a61240217dd320226675c8e Mon Sep 17 00:00:00 2001
From: Amaury Pouly <pamaury@rockbox.org>
Date: Mon, 2 Aug 2010 09:10:35 +0000
Subject: [PATCH] Fix a logf bug which would trigger undefined behaviour(and
 probably crash) when both DEBUG, CONFIG_PLATFORM & PLATFORM_HOSTED are enable

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27663 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/logf.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/firmware/logf.c b/firmware/logf.c
index 0136600e92..d8f036703e 100644
--- a/firmware/logf.c
+++ b/firmware/logf.c
@@ -212,6 +212,9 @@ void _logf(const char *fmt, ...)
     char buf[1024];
     vsnprintf(buf, sizeof buf, fmt, ap);
     DEBUGF("%s\n", buf);
+    /* restart va_list otherwise the result if undefined when vuprintf is called */
+    va_end(ap);
+    va_start(ap, fmt);
 #endif
 
     vuprintf(logf_push, NULL, fmt, ap);