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gdk: Add another assertion

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Bad things happen if you attach a subsurface above itself, so
catch that case.
This commit is contained in:
Matthias Clasen 2024-02-07 17:41:38 -05:00
parent 906661d40b
commit cefa09f74f
1 changed files with 1 additions and 0 deletions
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gdk/gdksubsurface.c
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@ -119,6 +119,7 @@ gdk_subsurface_attach (GdkSubsurface *subsurface,
g_return_val_if_fail (GDK_IS_SUBSURFACE (subsurface), FALSE);
g_return_val_if_fail (GDK_IS_TEXTURE (texture), FALSE);
g_return_val_if_fail (rect != NULL, FALSE);
g_return_val_if_fail (sibling != subsurface, FALSE);
g_return_val_if_fail (sibling == NULL || GDK_IS_SUBSURFACE (sibling), FALSE);
g_return_val_if_fail (sibling == NULL || sibling->parent == subsurface->parent, FALSE);