vala: Report an error if rank attribute is required but was not found

https://bugzilla.gnome.org/show_bug.cgi?id=660991

diff --git a/vala/valastruct.vala b/vala/valastruct.vala
index 21985d7af3420a72be8a49c1b9cf2210db3ac2fa..12480fc41d7cb660f218ced0b4f7f082b3219653 100644 (file)
--- a/vala/valastruct.vala
+++ b/vala/valastruct.vala
@@ -368,6 +368,9 @@ public class Vala.Struct : TypeSymbol {
                                var st = base_struct;
                                if (st != null) {
                                        rank = st.get_rank ();
+                               } else {
+                                       Report.error (source_reference, "internal error: struct has no rank");
+                                       return 0;
                                }
                        }
                }