isl_set_from_pw_aff: handle NULL input

[platform/upstream/isl.git] / isl_aff.c

diff --git a/isl_aff.c b/isl_aff.c
index 23d17f0..a6573be 100644 (file)
--- a/isl_aff.c
+++ b/isl_aff.c
@@ -1422,6 +1422,8 @@ __isl_give isl_map *isl_map_from_pw_aff(__isl_take isl_pw_aff *pwaff)
  */
 __isl_give isl_set *isl_set_from_pw_aff(__isl_take isl_pw_aff *pwaff)
 {
+       if (!pwaff)
+               return NULL;
        if (!isl_space_is_set(pwaff->dim))
                isl_die(isl_pw_aff_get_ctx(pwaff), isl_error_invalid,
                        "space of input is not a set",