Catch expression does not require semicolon to be a statement

Author: matklad

src/libsyntax/parse/classify.rs

@@ -30,7 +30,8 @@ pub fn expr_requires_semi_to_be_stmt(e: &ast::Expr) -> bool {
         ast::ExprKind::While(..) |
         ast::ExprKind::WhileLet(..) |
         ast::ExprKind::Loop(..) |
-        ast::ExprKind::ForLoop(..) => false,
+        ast::ExprKind::ForLoop(..) |
+        ast::ExprKind::Catch(..) => false,
         _ => true,
     }
 }

src/test/run-pass/catch-expr.rs

@@ -71,4 +71,10 @@ pub fn main() {
         Ok(&my_string)
     };
     assert_eq!(res, Ok("test"));
+
+    do catch {
+        ()
+    }
+
+    ();
 }