diff --git a/tests/ui/lint/malformed-expect.rs b/tests/ui/lint/malformed-expect.rs
new file mode 100644
index 000000000000..0a15e8e5d611
--- /dev/null
+++ b/tests/ui/lint/malformed-expect.rs
@@ -0,0 +1,9 @@
+// Regression test for #154800 and #154847
+//@ compile-flags: --crate-type=lib
+//@ check-pass
+
+#[expect]
+#[cfg(false)]
+fn main() {
+    let _ : fn(#[expect[]] i32);
+}