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-rw-r--r--compiler/rustc_middle/src/ty/assoc.rs4
1 files changed, 4 insertions, 0 deletions
diff --git a/compiler/rustc_middle/src/ty/assoc.rs b/compiler/rustc_middle/src/ty/assoc.rs
index 4e746a49d84..f77a8c6712e 100644
--- a/compiler/rustc_middle/src/ty/assoc.rs
+++ b/compiler/rustc_middle/src/ty/assoc.rs
@@ -96,6 +96,10 @@ impl AssocItem {
             }
         }
     }
+
+    pub fn is_impl_trait_in_trait(&self) -> bool {
+        self.opt_rpitit_info.is_some()
+    }
 }
 
 #[derive(Copy, Clone, PartialEq, Debug, HashStable, Eq, Hash, Encodable, Decodable)]