clarify that RollingBitField max is exclusive (#22947)

2022-02-07 13:40:31 -06:00
parent a160fc30f2
commit b2e475b5c4
2 changed files with 29 additions and 29 deletions
--- a/runtime/src/ancestors.rs
+++ b/runtime/src/ancestors.rs
@@ -86,7 +86,7 @@ impl Ancestors {
    }

    pub fn max_slot(&self) -> Slot {
-        self.ancestors.max() - 1
+        self.ancestors.max_exclusive().saturating_sub(1)
    }
 }
 #[cfg(test)]