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-rw-r--r--compiler/rustc_middle/src/traits/mod.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/compiler/rustc_middle/src/traits/mod.rs b/compiler/rustc_middle/src/traits/mod.rs
index 27079af06fc..d877bd5c626 100644
--- a/compiler/rustc_middle/src/traits/mod.rs
+++ b/compiler/rustc_middle/src/traits/mod.rs
@@ -397,6 +397,8 @@ pub enum ObligationCauseCode<'tcx> {
 
     RustCall,
 
+    DynCompatible(Span),
+
     /// Obligations to prove that a `Drop` or negative auto trait impl is not stronger than
     /// the ADT it's being implemented for.
     AlwaysApplicableImpl,