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This is a followup fix for upstream bug #774834 (flic decoder: Buffer overflow
in flx_decode_delta_fli):
https://bugzilla.gnome.org/show_bug.cgi?id=774834#c2
Patch copied from upstream source repository:
https://cgit.freedesktop.org/gstreamer/gst-plugins-good/commit/?id=1ab2b26193861b124426e2f8eb62b75b59ec5488
From 1ab2b26193861b124426e2f8eb62b75b59ec5488 Mon Sep 17 00:00:00 2001
From: Matthew Waters <matthew@centricular.com>
Date: Tue, 22 Nov 2016 23:46:00 +1100
Subject: [PATCH] flxdec: fix some warnings comparing unsigned < 0
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
bf43f44fcfada5ec4a3ce60cb374340486fe9fac was comparing an unsigned
expression to be < 0 which was always false.
gstflxdec.c: In function ‘flx_decode_brun’:
gstflxdec.c:322:33: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
if ((glong) row - count < 0) {
^
gstflxdec.c:332:33: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
if ((glong) row - count < 0) {
^
https://bugzilla.gnome.org/show_bug.cgi?id=774834
---
gst/flx/gstflxdec.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/gst/flx/gstflxdec.c b/gst/flx/gstflxdec.c
index d51a8e6..e675c99 100644
--- a/gst/flx/gstflxdec.c
+++ b/gst/flx/gstflxdec.c
@@ -319,7 +319,7 @@ flx_decode_brun (GstFlxDec * flxdec, guchar * data, guchar * dest)
if (count > 0x7f) {
/* literal run */
count = 0x100 - count;
- if ((glong) row - count < 0) {
+ if ((glong) row - (glong) count < 0) {
GST_ERROR_OBJECT (flxdec, "Invalid BRUN packet detected.");
return FALSE;
}
@@ -329,7 +329,7 @@ flx_decode_brun (GstFlxDec * flxdec, guchar * data, guchar * dest)
*dest++ = *data++;
} else {
- if ((glong) row - count < 0) {
+ if ((glong) row - (glong) count < 0) {
GST_ERROR_OBJECT (flxdec, "Invalid BRUN packet detected.");
return FALSE;
}
--
2.10.2
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