X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=polytope_scan.c;h=269bd8154f450c5660a3e0a701c08d3efc2804b1;hb=da725dafa573a0f0a3f2f3189d7f73d2af5c9a86;hp=41983aad3080c9b4ececc51385f0eb37ce742093;hpb=5781fa45d4c0b1b0742e07e05ec419f4ca638c86;p=platform%2Fupstream%2Fisl.git

diff --git a/polytope_scan.c b/polytope_scan.c
index 41983aa..269bd81 100644
--- a/polytope_scan.c
+++ b/polytope_scan.c
@@ -11,6 +11,7 @@
 #include "isl_equalities.h"
 #include "isl_seq.h"
 #include "isl_scan.h"
+#include <isl_mat_private.h>
 
 /* The input of this program is the same as that of the "polytope_scan"
  * program from the barvinok distribution.
@@ -72,6 +73,9 @@ static struct isl_mat *isl_basic_set_samples(struct isl_basic_set *bset)
 	struct isl_mat *T;
 	struct isl_mat *samples;
 
+	if (!bset)
+		return NULL;
+
 	if (bset->n_eq == 0)
 		return isl_basic_set_scan_samples(bset);