add trivial affine hull test

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

diff --git a/isl_map_piplib.c b/isl_map_piplib.c
index 18328b0..8d21c99 100644 (file)
--- a/isl_map_piplib.c
+++ b/isl_map_piplib.c
@@ -383,6 +383,9 @@ static struct isl_map *extremum_on(struct isl_ctx *ctx,
        struct isl_map  *map;
        PipMatrix *domain = NULL, *context = NULL;
 
+       if (!bmap || !dom)
+               goto error;
+
        isl_assert(ctx, bmap->nparam == dom->nparam, goto error);
        isl_assert(ctx, bmap->n_in == dom->dim, goto error);