Fix incremental compilation of cdylib emitting spurious unused_attributes lint

1 files changed, 10 insertions, 0 deletions

diff --git a/src/test/incremental/no_mangle.rs b/src/test/incremental/no_mangle.rs
new file mode 100644
index 00000000000..1b17886a4f9
--- /dev/null
+++ b/src/test/incremental/no_mangle.rs
@@ -0,0 +1,10 @@
+// revisions:rpass1 rpass2
+// compile-flags: --crate-type cdylib
+// skip-codegen
+
+#![deny(unused_attributes)]
+
+#[no_mangle]
+pub extern "C" fn rust_no_mangle() -> i32 {
+    42
+}