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-rw-r--r--compiler/rustc_sanitizers/src/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_sanitizers/src/lib.rs b/compiler/rustc_sanitizers/src/lib.rs
index e4792563e71..55be931bcd6 100644
--- a/compiler/rustc_sanitizers/src/lib.rs
+++ b/compiler/rustc_sanitizers/src/lib.rs
@@ -5,6 +5,7 @@
 
 // tidy-alphabetical-start
 #![feature(let_chains)]
+#![warn(unreachable_pub)]
 // tidy-alphabetical-end
 
 pub mod cfi;