From fe50286e147b76e2ea9f22abc9d32edbc4f26f92 Mon Sep 17 00:00:00 2001
From: Emmanuele Bassi <ebassi@gnome.org>
Date: Tue, 25 Aug 2020 16:32:49 +0100
Subject: [PATCH] a11y: Different value types cannot be equal

Bail out early, instead of going deep into the GtkAccessibleValue type
equal() implementation, where we expect both accessible values to have
the same type.
---
 gtk/gtkaccessiblevalue.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gtk/gtkaccessiblevalue.c b/gtk/gtkaccessiblevalue.c
index 5ea1db0488..2cefba0bc4 100644
--- a/gtk/gtkaccessiblevalue.c
+++ b/gtk/gtkaccessiblevalue.c
@@ -185,6 +185,9 @@ gtk_accessible_value_equal (const GtkAccessibleValue *value_a,
   if (value_a == NULL || value_b == NULL)
     return FALSE;
 
+  if (value_a->value_class != value_b->value_class)
+    return FALSE;
+
   if (value_a->value_class->equal == NULL)
     return FALSE;