isl_map.c: basic_map_space_reset: handle NULL input

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

diff --git a/isl_map.c b/isl_map.c
index a22fc94..7c9ac36 100644 (file)
--- a/isl_map.c
+++ b/isl_map.c
@@ -2993,6 +2993,8 @@ static __isl_give isl_basic_map *basic_map_space_reset(
 {
        isl_space *space;
 
+       if (!bmap)
+               return NULL;
        if (!isl_space_is_named_or_nested(bmap->dim, type))
                return bmap;