Built-in implementation of Tuple trait

[rust.git] / compiler / rustc_middle / src / traits / structural_impls.rs

diff --git a/compiler/rustc_middle/src/traits/structural_impls.rs b/compiler/rustc_middle/src/traits/structural_impls.rs
index 7fbd57ac7354aa2691dfec008de1a25618e355ea..c526344e1f263cfa92e280eb114d5e07b8a9b822 100644 (file)
--- a/compiler/rustc_middle/src/traits/structural_impls.rs
+++ b/compiler/rustc_middle/src/traits/structural_impls.rs
@@ -34,6 +34,8 @@ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
             super::ImplSource::TraitUpcasting(ref d) => write!(f, "{:?}", d),
 
             super::ImplSource::ConstDestruct(ref d) => write!(f, "{:?}", d),
+
+            super::ImplSource::Tuple => write!(f, "ImplSource::Tuple"),
         }
     }
 }