1 files changed, 57 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/splice/length-and-deleteCount-exceeding-integer-limit.js b/js/src/tests/test262/built-ins/Array/prototype/splice/length-and-deleteCount-exceeding-integer-limit.js
new file mode 100644
index 0000000000..1436e7f162
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/splice/length-and-deleteCount-exceeding-integer-limit.js
@@ -0,0 +1,57 @@
+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-array.prototype.splice
+description: >
+  Length and deleteCount are both clamped to 2^53-1 when they exceed the integer limit.
+info: |
+  ...
+  2. Let len be ? ToLength(? Get(O, "length")).
+  ...
+  7. Else,
+    a. Let insertCount be the number of actual arguments minus 2.
+    b. Let dc be ? ToInteger(deleteCount).
+    c. Let actualDeleteCount be min(max(dc, 0), len - actualStart).
+  ...
+  11. Repeat, while k < actualDeleteCount
+    a. Let from be ! ToString(actualStart+k).
+    b. Let fromPresent be ? HasProperty(O, from).
+    c. If fromPresent is true, then
+       i. Let fromValue be ? Get(O, from).
+      ii. Perform ? CreateDataPropertyOrThrow(A, ! ToString(k), fromValue).
+    d. Increment k by 1.
+  ...
+includes: [compareArray.js]
+features: [exponentiation]
+---*/
+
+var arrayLike = {
+  "9007199254740988": "9007199254740988",
+  "9007199254740989": "9007199254740989",
+  "9007199254740990": "9007199254740990",
+  "9007199254740991": "9007199254740991",
+  length: 2 ** 53 + 2,
+};
+
+var result = Array.prototype.splice.call(arrayLike, 9007199254740989, 2 ** 53 + 4);
+
+assert.compareArray(result, ["9007199254740989", "9007199254740990"],
+  'The value of result is expected to be ["9007199254740989", "9007199254740990"]');
+
+assert.sameValue(arrayLike.length, 2 ** 53 - 3,
+  'The value of arrayLike.length is expected to be 2 ** 53 - 3');
+
+assert.sameValue(arrayLike["9007199254740988"], "9007199254740988",
+  'The value of arrayLike["9007199254740988"] is expected to be "9007199254740988"');
+
+assert.sameValue("9007199254740989" in arrayLike, false,
+  'The result of evaluating ("9007199254740989" in arrayLike) is expected to be false');
+
+assert.sameValue("9007199254740990" in arrayLike, false,
+  'The result of evaluating ("9007199254740990" in arrayLike) is expected to be false');
+
+assert.sameValue(arrayLike["9007199254740991"], "9007199254740991",
+  'The value of arrayLike["9007199254740991"] is expected to be "9007199254740991"');
+
+reportCompare(0, 0);