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-rw-r--r--gtk/gtkcellrenderer.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/gtk/gtkcellrenderer.c b/gtk/gtkcellrenderer.c
index a6760ee1ac..b2ef07b4a5 100644
--- a/gtk/gtkcellrenderer.c
+++ b/gtk/gtkcellrenderer.c
@@ -1657,4 +1657,9 @@ gtk_cell_renderer_get_aligned_area (GtkCellRenderer *cell,
klass = GTK_CELL_RENDERER_GET_CLASS (cell);
klass->get_aligned_area (cell, widget, flags, cell_area, aligned_area);
+
+ g_assert (aligned_area->x >= cell_area->x && aligned_area->x < cell_area->x + cell_area->width);
+ g_assert (aligned_area->y >= cell_area->y && aligned_area->y < cell_area->y + cell_area->height);
+ g_assert ((aligned_area->x - cell_area->x) + aligned_area->width <= cell_area->width);
+ g_assert ((aligned_area->y - cell_area->y) + aligned_area->height <= cell_area->height);
}