ParserBase should accept ESCAPED_STRICT_RESERVED_WORD as an identifier

test/mjsunit/regress/regress-v8-5692.js

Index: test/mjsunit/regress/regress-v8-5692.js
diff --git a/test/mjsunit/regress/regress-v8-5692.js b/test/mjsunit/regress/regress-v8-5692.js
new file mode 100644
index 0000000000000000000000000000000000000000..6e7aa0075b28bfe46b905e1c23c0a85f157c50b9
--- /dev/null
+++ b/test/mjsunit/regress/regress-v8-5692.js
@@ -0,0 +1,16 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// "let" in non-strict mode can be a label, even if composed of unicode escape
+// sequences.
+
+var wasTouched = false;
+l\u0065t:
+do {
+  break l\u0065t;
+  wasTouched = true;
+} while (false);
+// Verify that in addition to no exception thrown, breaking to the label also
+// works.
+assertEquals(false, wasTouched);

[adamk, 2017/02/15 01:25:39]

assertFalse will work here.

[vabr (Chromium), 2017/02/15 01:34:20]

Done.