From: Benjamin Otte <otte@redhat.com>
Date: Mon, 24 Jul 2023 14:12:51 +0000 (+0200)
Subject: memorytexture: Add a check
X-Git-Tag: archive/raspbian/4.12.3+ds-1+rpi1~1^2^2^2~22^2~1^2~21^2~7
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=ae509406f19b7cb705eb910ebf37159065b564ce;p=gtk4.git

memorytexture: Add a check

Sophie Herold was running into this problem while coding, so let's help
people by catching it early.
---

diff --git a/gdk/gdkmemorytexture.c b/gdk/gdkmemorytexture.c
index 85d9ba0a25..0e8e2cc78d 100644
--- a/gdk/gdkmemorytexture.c
+++ b/gdk/gdkmemorytexture.c
@@ -151,6 +151,8 @@ gdk_memory_texture_new (int              width,
   g_return_val_if_fail (height > 0, NULL);
   g_return_val_if_fail (bytes != NULL, NULL);
   g_return_val_if_fail (stride >= width * gdk_memory_format_bytes_per_pixel (format), NULL);
+  /* needs to be this complex to support subtexture of the bottom right part */
+  g_return_val_if_fail (g_bytes_get_size (bytes) >= stride * (height - 1) + width * gdk_memory_format_bytes_per_pixel (format), NULL);
 
   bytes = gdk_memory_sanitize (bytes, width, height, format, stride, &stride);