correct is_cyclic again for non-variable ref cells (#2116)

2023-10-15 01:28:42 -06:00
parent 3fb2e451a2
commit 3a6aee72a3
2 changed files with 7 additions and 1 deletions
--- a/src/machine/gc.rs
+++ b/src/machine/gc.rs
@@ -273,8 +273,10 @@ impl<'a, UMP: UnmarkPolicy> StacklessPreOrderHeapIter<'a, UMP> {
    fn is_cyclic(&self, var_current: usize, var_next: usize) -> bool {
        if self.heap[var_next].is_var() {
            !self.heap[var_next].get_forwarding_bit() && var_current != var_next
+        } else if self.heap[var_next].is_ref() {
+            self.heap[var_next].get_mark_bit()
        } else {
-            self.heap[var_next].is_ref()
+            false
        }
    }