Test that byte order mark can only go at beginning of input

dtolnay · Sep 29, 2022 · 1d068c8 · 1d068c8
1 parent e2327f0
commit 1d068c8
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/tests/test.rs b/tests/test.rs
@@ -639,4 +639,7 @@ fn byte_order_mark() {
         TokenTree::Ident(ident) => assert_eq!(ident, "foo"),
         _ => unreachable!(),
     }
+
+    let string = "foo\u{feff}";
+    string.parse::<TokenStream>().unwrap_err();
 }