1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/tests/test262/annexB/built-ins/RegExp/prototype/compile/flags-to-string.js b/js/src/tests/test262/annexB/built-ins/RegExp/prototype/compile/flags-to-string.js
new file mode 100644
index 0000000000..7044462a56
--- /dev/null
+++ b/js/src/tests/test262/annexB/built-ins/RegExp/prototype/compile/flags-to-string.js
@@ -0,0 +1,41 @@
+// 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-regexp.prototype.compile
+es6id: B.2.5.1
+description: Behavior when flags is a string describing a valid flag set
+info: |
+    [...]
+    5. Return ? RegExpInitialize(O, P, F).
+
+    21.2.3.2.2 Runtime Semantics: RegExpInitialize
+
+    [...]
+    3. If flags is undefined, let F be the empty String.
+    4. Else, let F be ? ToString(flags).
+    [...]
+---*/
+
+var subject = /a/g;
+
+subject.compile('a', 'i');
+
+assert.sameValue(
+  subject.flags,
+  new RegExp('a', 'i').flags,
+  '[[OriginalFlags]] internal slot'
+);
+assert.sameValue(
+  subject.test('A'),
+  true,
+  '[[RegExpMatcher]] internal slot (addition of `i` flag)'
+);
+
+subject.lastIndex = 1;
+assert.sameValue(
+  subject.test('A'),
+  true,
+  '[[RegExpMatcher]] internal slot (removal of `g` flag)'
+);
+
+reportCompare(0, 0);