add asserts for passing in bad index values to DM_get_***_data, CustomData_get()

1 files changed, 4 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/customdata.c b/source/blender/blenkernel/intern/customdata.c
index b6c608661cd..83685477725 100644
--- a/source/blender/blenkernel/intern/customdata.c
+++ b/source/blender/blenkernel/intern/customdata.c
@@ -2073,6 +2073,8 @@ void *CustomData_get(const CustomData *data, int index, int type)
 	int offset;
 	int layer_index;
 	
+	BLI_assert(index >= 0);
+
 	/* get the layer index of the active layer of type */
 	layer_index = CustomData_get_active_layer_index(data, type);
 	if (layer_index < 0) return NULL;
@@ -2088,6 +2090,8 @@ void *CustomData_get_n(const CustomData *data, int type, int index, int n)
 	int layer_index;
 	int offset;
 
+	BLI_assert(index >= 0 && n >= 0);
+
 	/* get the layer index of the first layer of type */
 	layer_index = data->typemap[type];
 	if (layer_index < 0) return NULL;