From 3f2f363485d3da15bc2c397ea1f1705b4f377b23 Mon Sep 17 00:00:00 2001
From: Vadim Kochan <vadim4j@gmail.com>
Date: Wed, 25 Nov 2015 01:51:47 +0200
Subject: [PATCH] trafgen: Make sure yyin is set before close it

In case if cpp failed then it is possible that trafgen
may hang on closing uninitialized yyin.

Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
---
 trafgen_parser.y | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/trafgen_parser.y b/trafgen_parser.y
index afcb3e21..44751ab1 100644
--- a/trafgen_parser.y
+++ b/trafgen_parser.y
@@ -625,7 +625,7 @@ void compile_packets(char *file, bool verbose, unsigned int cpu, bool invoke_cpp
 
 	ret = 0;
 err:
-	if (yyin != stdin)
+	if (yyin && yyin != stdin)
 		fclose(yyin);
 
 	if (invoke_cpp)
-- 
2.11.4.GIT