Formatting + extra test

Author: teofr

clippy_lints/src/undocumented_unsafe_blocks.rs

@@ -728,8 +728,9 @@ fn span_has_safety_comment(cx: &LateContext<'_>, span: Span, accept_comment_abov
 }
 
 /// Checks if the given text has a safety comment for the immediately proceeding line.
-/// 
-/// If `accept_comment_above_attributes` is true, it will ignore attributes inbetween blocks of comments
+///
+/// If `accept_comment_above_attributes` is true, it will ignore attributes inbetween blocks of
+/// comments
 fn text_has_safety_comment(
     src: &str,
     line_starts: &[RelativeBytePos],

tests/ui-toml/undocumented_unsafe_blocks/undocumented_unsafe_blocks.disabled.stderr

@@ -482,5 +482,13 @@ help: consider removing the safety comment
 LL |     // SAFETY: ...
    |     ^^^^^^^^^^^^^^
 
-error: aborting due to 55 previous errors
+error: unsafe block missing a safety comment
+  --> tests/ui-toml/undocumented_unsafe_blocks/undocumented_unsafe_blocks.rs:765:9
+   |
+LL |         unsafe {}
+   |         ^^^^^^^^^
+   |
+   = help: consider adding a safety comment on the preceding line
+
+error: aborting due to 56 previous errors
 

tests/ui-toml/undocumented_unsafe_blocks/undocumented_unsafe_blocks.rs

@@ -757,6 +757,14 @@ mod issue_todo {
     #[doc(hidden)]
     mod y {}
     //~[default]^ unnecessary_safety_comment
+
+    fn foo() {
+        #[doc(hidden)]
+        // SAFETY: unnecessary_safety_comment should not trigger here
+        #[allow(unsafe_code)]
+        unsafe {}
+        //~[disabled]^ undocumented_unsafe_blocks
+    }
 }
 
 fn main() {}