1 files changed, 26 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/literals/regexp/u-invalid-legacy-octal-escape.js b/js/src/tests/test262/language/literals/regexp/u-invalid-legacy-octal-escape.js
new file mode 100644
index 0000000000..1d5ea2d650
--- /dev/null
+++ b/js/src/tests/test262/language/literals/regexp/u-invalid-legacy-octal-escape.js
@@ -0,0 +1,26 @@
+// |reftest| error:SyntaxError
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-patterns
+es6id: 21.2.1
+description: Legacy Octal Escape Sequence not supported with `u` flag
+info: |
+    The `u` flag precludes the use of LegacyOctalEscapeSequence irrespective
+    of the presence of Annex B extensions.
+
+    CharacterEscape [U] ::
+        ControlEscape
+        c ControlLetter
+        0[lookahead ∉ DecimalDigit]
+        HexEscapeSequence
+        RegExpUnicodeEscapeSequence[?U]
+        IdentityEscape[?U]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/\1/u;