1 files changed, 20 insertions, 1 deletions
diff --git a/src/tools/clippy/tests/ui/undocumented_unsafe_blocks.rs b/src/tools/clippy/tests/ui/undocumented_unsafe_blocks.rs
index 08aee4332..c05eb447b 100644
--- a/src/tools/clippy/tests/ui/undocumented_unsafe_blocks.rs
+++ b/src/tools/clippy/tests/ui/undocumented_unsafe_blocks.rs
@@ -1,6 +1,6 @@
 // aux-build:proc_macro_unsafe.rs
 
-#![warn(clippy::undocumented_unsafe_blocks)]
+#![warn(clippy::undocumented_unsafe_blocks, clippy::unnecessary_safety_comment)]
 #![allow(clippy::let_unit_value, clippy::missing_safety_doc)]
 
 extern crate proc_macro_unsafe;
@@ -490,4 +490,23 @@ unsafe impl CrateRoot for () {}
 // SAFETY: ok
 unsafe impl CrateRoot for (i32) {}
 
+fn issue_9142() {
+    // SAFETY: ok
+    let _ =
+        // we need this comment to avoid rustfmt putting
+        // it all on one line
+        unsafe {};
+
+    // SAFETY: this is more than one level away, so it should warn
+    let _ = {
+        if unsafe { true } {
+            todo!();
+        } else {
+            let bar = unsafe {};
+            todo!();
+            bar
+        }
+    };
+}
+
 fn main() {}