From 8cfcbf7dde7705c849f4f7a5acb26f79b895fffe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jaroslav=20Loba=C4=8Devski?= <jarlob@github.com>
Date: Thu, 19 Oct 2023 15:57:03 +0200
Subject: [PATCH] Fix wild address read in stbi__gif_load_next

It seems `layers` were forgotten to include in equation.
Fixes #1538
---
 stb_image.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stb_image.h b/stb_image.h
index 5e807a0a6e..cd09ab6976 100644
--- a/stb_image.h
+++ b/stb_image.h
@@ -7019,7 +7019,7 @@ static void *stbi__load_gif_main(stbi__context *s, int **delays, int *x, int *y,
             }
             memcpy( out + ((layers - 1) * stride), u, stride );
             if (layers >= 2) {
-               two_back = out - 2 * stride;
+               two_back = out + (layers - 2) * stride;
             }
 
             if (delays) {
