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-rw-r--r--src/librustc/ich/impls_syntax.rs4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/librustc/ich/impls_syntax.rs b/src/librustc/ich/impls_syntax.rs
index f8bf8f4ab8a..b4800796b14 100644
--- a/src/librustc/ich/impls_syntax.rs
+++ b/src/librustc/ich/impls_syntax.rs
@@ -17,6 +17,10 @@ use crate::hir::def_id::{DefId, CrateNum, CRATE_DEF_INDEX};
 use smallvec::SmallVec;
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
 
+impl<'ctx> syntax_pos::StableHashingContextLike for StableHashingContext<'ctx> {}
+impl<'ctx> syntax::StableHashingContextLike for StableHashingContext<'ctx> {}
+impl<'ctx> rustc_target::StableHashingContextLike for StableHashingContext<'ctx> {}
+
 impl_stable_hash_for!(struct ::syntax::ast::Lit {
     kind,
     token,