/* isl_subtract_diff_collector callback.
*/
-int basic_map_subtract_add(struct isl_diff_collector *dc,
+static int basic_map_subtract_add(struct isl_diff_collector *dc,
__isl_take isl_basic_map *bmap)
{
struct isl_subtract_diff_collector *sdc;
/* isl_is_empty_diff_collector callback.
*/
-int basic_map_is_empty_add(struct isl_diff_collector *dc,
+static int basic_map_is_empty_add(struct isl_diff_collector *dc,
__isl_take isl_basic_map *bmap)
{
struct isl_is_empty_diff_collector *edc;