From: Matthias Clasen <mclasen@redhat.com>
Date: Sun, 14 May 2023 11:46:44 +0000 (-0400)
Subject: gdk: Add an assertion
X-Git-Tag: archive/raspbian/4.12.3+ds-1+rpi1~1^2^2^2~22^2~1^2~261^2
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=51ad2a55a8aa1e6278e76f8636653b0d9db784b4;p=gtk4.git

gdk: Add an assertion

We simply overwrite any previous region,
so assert that the field was NULL before.
---

diff --git a/gdk/gdktexture.c b/gdk/gdktexture.c
index b392b90222..8c8de2d42d 100644
--- a/gdk/gdktexture.c
+++ b/gdk/gdktexture.c
@@ -711,6 +711,8 @@ gdk_texture_set_diff (GdkTexture     *self,
                       GdkTexture     *previous,
                       cairo_region_t *diff)
 {
+  g_assert (self->diff_to_previous == NULL);
+
   self->previous_texture = previous;
   self->diff_to_previous = diff;
   g_atomic_pointer_set (&previous->next_texture, self);