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path: root/compiler/rustc_mir_transform/src/coverage/graph.rs
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-rw-r--r--compiler/rustc_mir_transform/src/coverage/graph.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_mir_transform/src/coverage/graph.rs b/compiler/rustc_mir_transform/src/coverage/graph.rs
index 7defc9ec148..0d807db404c 100644
--- a/compiler/rustc_mir_transform/src/coverage/graph.rs
+++ b/compiler/rustc_mir_transform/src/coverage/graph.rs
@@ -264,6 +264,7 @@ impl graph::WithPredecessors for CoverageGraph {
 
 rustc_index::newtype_index! {
     /// A node in the control-flow graph of CoverageGraph.
+    #[orderable]
     #[debug_format = "bcb{}"]
     pub(super) struct BasicCoverageBlock {
         const START_BCB = 0;