File ffmpeg-7-CVE-2026-65705.patch of Package A_tw-ffmpeg-7

From 30a52276f9dff60fe732d8bb8d463e587ff69c94 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Sun, 12 Jul 2026 03:27:47 +0200
Subject: [PATCH] avfilter/vf_floodfill: remove unneeded variables

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit f186c50cf53aec20e9a29059cb22ca3f2d59201c)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavfilter/vf_floodfill.c | 35 ++++++++++++++++-------------------
 1 file changed, 16 insertions(+), 19 deletions(-)

diff a/libavfilter/vf_floodfill.c b/libavfilter/vf_floodfill.c
--- a/libavfilter/vf_floodfill.c
+++ b/libavfilter/vf_floodfill.c
@@ -39,7 +39,6 @@
     int d[4];
 
     int nb_planes;
-    int back, front;
     Points *points;
 
     int (*is_same)(const AVFrame *frame, int x, int y,
@@ -270,7 +269,6 @@
        }
     }
 
-    s->front = s->back = 0;
     s->points = av_calloc(inlink->w * inlink->h, 4 * sizeof(Points));
     if (!s->points)
         return AVERROR(ENOMEM);
@@ -293,6 +291,7 @@
     const int w = frame->width;
     const int h = frame->height;
     int i, ret;
+    int front = 0;
 
     if (is_inside(s->x, s->y, w, h)) {
         s->pick_pixel(frame, s->x, s->y, &s0, &s1, &s2, &s3);
@@ -310,9 +309,9 @@
             goto end;
 
         if (s->is_same(frame, s->x, s->y, s0, s1, s2, s3)) {
-            s->points[s->front].x = s->x;
-            s->points[s->front].y = s->y;
-            s->front++;
+            s->points[front].x = s->x;
+            s->points[front].y = s->y;
+            front++;
         }
 
         if (ret = ff_inlink_make_frame_writable(link, &frame)) {
@@ -320,34 +319,34 @@
             return ret;
         }
 
-        while (s->front > s->back) {
+        while (front > 0) {
             int x, y;
 
-            s->front--;
-            x = s->points[s->front].x;
-            y = s->points[s->front].y;
+            front--;
+            x = s->points[front].x;
+            y = s->points[front].y;
 
             if (s->is_same(frame, x, y, s0, s1, s2, s3)) {
                 s->set_pixel(frame, x, y, d0, d1, d2, d3);
 
                 if (is_inside(x + 1, y, w, h)) {
-                    s->points[s->front]  .x = x + 1;
-                    s->points[s->front++].y = y;
+                    s->points[front]  .x = x + 1;
+                    s->points[front++].y = y;
                 }
 
                 if (is_inside(x - 1, y, w, h)) {
-                    s->points[s->front]  .x = x - 1;
-                    s->points[s->front++].y = y;
+                    s->points[front]  .x = x - 1;
+                    s->points[front++].y = y;
                 }
 
                 if (is_inside(x, y + 1, w, h)) {
-                    s->points[s->front]  .x = x;
-                    s->points[s->front++].y = y + 1;
+                    s->points[front]  .x = x;
+                    s->points[front++].y = y + 1;
                 }
 
                 if (is_inside(x, y - 1, w, h)) {
-                    s->points[s->front]  .x = x;
-                    s->points[s->front++].y = y - 1;
+                    s->points[front]  .x = x;
+                    s->points[front++].y = y - 1;
                 }
             }
         }