From 91a4abd8f544219ce85fb1b1ced9f1389d94faaa Mon Sep 17 00:00:00 2001
From: Baptiste Coudurier <baptiste.coudurier@gmail.com>
Date: Mon, 21 Jun 2010 01:05:30 +0000
Subject: fail if input and output are the same

Originally committed as revision 23672 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 tools/qt-faststart.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'tools/qt-faststart.c')

diff --git a/tools/qt-faststart.c b/tools/qt-faststart.c
index 7bcd5b72bd..ace4c113c8 100644
--- a/tools/qt-faststart.c
+++ b/tools/qt-faststart.c
@@ -27,6 +27,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <inttypes.h>
+#include <string.h>
 
 #ifdef __MINGW32__
 #define fseeko(x,y,z)  fseeko64(x,y,z)
@@ -98,6 +99,11 @@ int main(int argc, char *argv[])
         return 0;
     }
 
+    if (!strcmp(argv[1], argv[2])) {
+        fprintf(stderr, "input and output files need to be different\n");
+        return 1;
+    }
+
     infile = fopen(argv[1], "rb");
     if (!infile) {
         perror(argv[1]);
-- 
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