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-rw-r--r--compiler/rustc_mir_dataflow/src/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_mir_dataflow/src/lib.rs b/compiler/rustc_mir_dataflow/src/lib.rs
index a0efc623b8e..a8a56baa1ff 100644
--- a/compiler/rustc_mir_dataflow/src/lib.rs
+++ b/compiler/rustc_mir_dataflow/src/lib.rs
@@ -7,6 +7,7 @@
 #![feature(let_chains)]
 #![feature(never_type)]
 #![feature(try_blocks)]
+#![warn(unreachable_pub)]
 // tidy-alphabetical-end
 
 use rustc_middle::ty;