Avoid predecessors having Drop impls

2021-05-07 21:00:03 -04:00
parent 467253ff6a
commit 0367e24f94
2 changed files with 5 additions and 5 deletions
--- a/compiler/rustc_mir/src/transform/coverage/graph.rs
+++ b/compiler/rustc_mir/src/transform/coverage/graph.rs
@@ -269,13 +269,13 @@ impl graph::WithSuccessors for CoverageGraph {

 impl graph::GraphPredecessors<'graph> for CoverageGraph {
    type Item = BasicCoverageBlock;
-    type Iter = std::vec::IntoIter<BasicCoverageBlock>;
+    type Iter = std::iter::Copied<std::slice::Iter<'graph, BasicCoverageBlock>>;
 }

 impl graph::WithPredecessors for CoverageGraph {
    #[inline]
    fn predecessors(&self, node: Self::Node) -> <Self as graph::GraphPredecessors<'_>>::Iter {
-        self.predecessors[node].clone().into_iter()
+        self.predecessors[node].iter().copied()
    }
 }