1 files changed, 30 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Number/string-numeric-separator-literal-dd-dot-dd-ep-sign-plus-dds-nsl-dd.js b/js/src/tests/test262/built-ins/Number/string-numeric-separator-literal-dd-dot-dd-ep-sign-plus-dds-nsl-dd.js
new file mode 100644
index 0000000000..379f3ca818
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Number/string-numeric-separator-literal-dd-dot-dd-ep-sign-plus-dds-nsl-dd.js
@@ -0,0 +1,30 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: prod-NumericLiteralSeparator
+description: NumericLiteralSeparator is not valid on string conversions for ToNumber operations
+info: |
+  DecimalDigits `.` DecimalDigits ExponentPart_opt `+` DecimalDigits
+
+  NumericLiteralSeparator ::
+    _
+
+  DecimalLiteral ::
+    DecimalIntegerLiteral . DecimalDigits_opt ExponentPart_opt
+
+  DecimalDigits ::
+    ...
+    DecimalDigits NumericLiteralSeparator DecimalDigit
+
+  SignedInteger ::
+    ...
+    + DecimalDigits
+    ...
+
+features: [numeric-separator-literal]
+---*/
+
+assert.sameValue(Number("1.0e+10_0"), NaN, "1.0e+10_0");
+
+reportCompare(0, 0);