tests: attributed comment-only blocks

Author: calebcartwright

Diff for: tests/source/issue_4475.rs

@@ -0,0 +1,27 @@
+fn main() {
+    #[cfg(debug_assertions)]
+    { println!("DEBUG"); }
+}
+
+fn main() {
+    #[cfg(feature = "foo")]
+    {
+        /*
+        let foo = 0
+        */
+    }
+}
+
+fn main() {
+    #[cfg(feature = "foo")]
+    { /* let foo = 0; */ }
+}
+
+fn main() {
+    #[foo]
+    #[bar]
+    #[baz]
+    {
+        // let foo = 0;
+    }
+}

Diff for: tests/target/issue_4467.rs

@@ -0,0 +1,6 @@
+pub fn main() {
+    #[cfg(feature = "std")]
+    {
+        // Comment
+    }
+}

Diff for: tests/target/issue_4475.rs

@@ -0,0 +1,29 @@
+fn main() {
+    #[cfg(debug_assertions)]
+    {
+        println!("DEBUG");
+    }
+}
+
+fn main() {
+    #[cfg(feature = "foo")]
+    {
+        /*
+        let foo = 0
+        */
+    }
+}
+
+fn main() {
+    #[cfg(feature = "foo")]
+    { /* let foo = 0; */ }
+}
+
+fn main() {
+    #[foo]
+    #[bar]
+    #[baz]
+    {
+        // let foo = 0;
+    }
+}

Diff for: tests/target/issue_4522.rs

@@ -0,0 +1,6 @@
+fn main() {
+    #[cfg(feature = "foo")]
+    {
+        // let foo = 0;
+    }
+}