isl_basic_set_total_dim: handle NULL input

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>

diff --git a/isl_map.c b/isl_map.c
index b0f5100..e0defa7 100644 (file)
--- a/isl_map.c
+++ b/isl_map.c
@@ -122,6 +122,8 @@ unsigned isl_basic_set_n_param(__isl_keep isl_basic_set *bset)
 
 unsigned isl_basic_set_total_dim(const struct isl_basic_set *bset)
 {
+       if (!bset)
+               return 0;
        return isl_space_dim(bset->dim, isl_dim_all) + bset->n_div;
 }