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-rw-r--r--compiler/rustc_borrowck/src/dataflow.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_borrowck/src/dataflow.rs b/compiler/rustc_borrowck/src/dataflow.rs
index 9b21db9c3ec..b3d14c1beb5 100644
--- a/compiler/rustc_borrowck/src/dataflow.rs
+++ b/compiler/rustc_borrowck/src/dataflow.rs
@@ -109,6 +109,7 @@ impl_visitable! {
 }
 
 rustc_index::newtype_index! {
+    #[orderable]
     #[debug_format = "bw{}"]
     pub struct BorrowIndex {}
 }