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-rw-r--r--tests/ui/foreign/foreign-fn-linkname.rs3
1 files changed, 3 insertions, 0 deletions
diff --git a/tests/ui/foreign/foreign-fn-linkname.rs b/tests/ui/foreign/foreign-fn-linkname.rs
index f6d820594..d1d6e703e 100644
--- a/tests/ui/foreign/foreign-fn-linkname.rs
+++ b/tests/ui/foreign/foreign-fn-linkname.rs
@@ -2,6 +2,9 @@
// ignore-wasm32-bare no libc to test ffi with
// ignore-sgx no libc
+// Ensure no false positive on "unused extern crate" lint
+#![deny(unused_extern_crates)]
+
#![feature(rustc_private)]
extern crate libc;