From b8ed4930618b170de57a9086e1e9892216454684 Mon Sep 17 00:00:00 2001
From: Adam Richter <adamrichter4@gmail.com>
Date: Sun, 12 May 2019 05:03:25 -0700
Subject: [PATCH] libswcale: Fix possible string overflow in test.

In libswcale/tests/swcale.c, the function fileTest() calls sscanf in
an argument of "%12s" on character srcStr[] and dstStr[], which are
only 12 bytes.  So, if the input string is 12 characters, a
terminating null byte can be written past the end of these arrays.

This bug was found by cppcheck.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libswscale/tests/swscale.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libswscale/tests/swscale.c b/libswscale/tests/swscale.c
index e72c4c3306..cb731f6211 100644
--- a/libswscale/tests/swscale.c
+++ b/libswscale/tests/swscale.c
@@ -312,10 +312,10 @@ static int fileTest(const uint8_t * const ref[4], int refStride[4],
     while (fgets(buf, sizeof(buf), fp)) {
         struct Results r;
         enum AVPixelFormat srcFormat;
-        char srcStr[12];
+        char srcStr[13];
         int srcW = 0, srcH = 0;
         enum AVPixelFormat dstFormat;
-        char dstStr[12];
+        char dstStr[13];
         int dstW = 0, dstH = 0;
         int flags;
         int ret;