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-rw-r--r--compiler/rustc_query_impl/src/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_query_impl/src/lib.rs b/compiler/rustc_query_impl/src/lib.rs
index 40da46a027d..73c205fdb17 100644
--- a/compiler/rustc_query_impl/src/lib.rs
+++ b/compiler/rustc_query_impl/src/lib.rs
@@ -8,6 +8,7 @@
 #![feature(min_specialization)]
 #![feature(rustc_attrs)]
 #![feature(rustdoc_internals)]
+#![warn(unreachable_pub)]
 // tidy-alphabetical-end
 
 use rustc_data_structures::stable_hasher::HashStable;