1 files changed, 33 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/literals/string/legacy-non-octal-escape-sequence-9-strict-strict.js b/js/src/tests/test262/language/literals/string/legacy-non-octal-escape-sequence-9-strict-strict.js
new file mode 100644
index 0000000000..dcdf0ad83e
--- /dev/null
+++ b/js/src/tests/test262/language/literals/string/legacy-non-octal-escape-sequence-9-strict-strict.js
@@ -0,0 +1,33 @@
+// |reftest| error:SyntaxError
+'use strict';
+// Copyright (C) 2020 Sony Interactive Entertainment Inc. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-literals-string-literals
+description: LegacyOctalEscapeSequence is not enabled in strict mode code - 9
+info: |
+  EscapeSequence ::
+    CharacterEscapeSequence
+    LegacyOctalEscapeSequence
+    NonOctalDecimalEscapeSequence
+    HexEscapeSequence
+    UnicodeEscapeSequence
+
+  NonOctalDecimalEscapeSequence :: one of
+    8 9
+
+  ## 12.8.4.1 Static Semantics: Early Errors
+
+  EscapeSequence :: NonOctalDecimalEscapeSequence
+
+  - It is a Syntax Error if the source code matching this production is strict
+    mode code.
+flags: [onlyStrict]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+'\9';