Add comment pointing to test

2026-05-15 20:45:45 +03:00 · 2021-09-11 10:08:11 +01:00
parent d6ce3269b4
commit 43b79d8ef5
1 changed files with 3 additions and 0 deletions
@@ -685,6 +685,9 @@ pub fn check_user_unop(
                    if let Some(sp) =
                        self.tcx.sess.parse_sess.ambiguous_block_expr_parse.borrow().get(&sp)
                    {
+                        // If the previous expression was a block expression, suggest parentheses
+                        // (turning this into a binary subtraction operation instead.)
+                        // for example, `{2} - 2` -> `({2}) - 2` (see src\test\ui\parser\expr-as-stmt.rs)
                        self.tcx.sess.parse_sess.expr_parentheses_needed(&mut err, *sp);
                    } else {
                        match actual.kind() {