[gtk/ebassi/for-master: 3/3] Validate arguments

[Emmanuele Bassi <ebassi src gnome org>]

commit f41012080fa79c408d0277f7b68d4b2fe14dd69c
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Tue Jan 26 12:56:32 2021 +0000

    Validate arguments
    
    We're just assuming everything is not NULL or with a valid type.

 gdk/gdksurface.c | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/gdk/gdksurface.c b/gdk/gdksurface.c
index aaeb6d21b4..31c5b44b73 100644
--- a/gdk/gdksurface.c
+++ b/gdk/gdksurface.c
@@ -2984,6 +2984,11 @@ gdk_surface_translate_coordinates (GdkSurface *from,
   int x1, y1, x2, y2;
   GdkSurface *f, *t;
 
+  g_return_val_if_fail (GDK_IS_SURFACE (from), FALSE);
+  g_return_val_if_fail (GDK_IS_SURFACE (to), FALSE);
+  g_return_val_if_fail (x != NULL, FALSE);
+  g_return_val_if_fail (y != NULL, FALSE);
+
   in_x = *x;
   in_y = *y;