add Addr::AttVar to address ordering

2019-02-02 12:20:39 -07:00
parent c5fbff505b
commit 8f771792b3
3 changed files with 13 additions and 12 deletions
--- a/src/prolog/instructions.rs
+++ b/src/prolog/instructions.rs
@@ -747,7 +747,7 @@ impl PartialOrd<Ref> for Addr {
                            Some(Ordering::Less)
                        }
                },
-            &Addr::HeapCell(h) =>
+            &Addr::HeapCell(h) | &Addr::AttrVar(h, _) =>
                match r {
                    &Ref::StackCell(..) => Some(Ordering::Less),
                    &Ref::HeapCell(h1) => h.partial_cmp(&h1)