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-rw-r--r--src/libcore/iter/mod.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libcore/iter/mod.rs b/src/libcore/iter/mod.rs
index 080b70c6368..4a1f6418bb5 100644
--- a/src/libcore/iter/mod.rs
+++ b/src/libcore/iter/mod.rs
@@ -309,6 +309,7 @@
 //! [`min`]: trait.Iterator.html#method.min
 
 #![stable(feature = "rust1", since = "1.0.0")]
+#![deny(unsafe_op_in_unsafe_fn)]
 
 use crate::ops::Try;