1 files changed, 49 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/find/array-altered-during-loop.js b/js/src/tests/test262/built-ins/Array/prototype/find/array-altered-during-loop.js
new file mode 100644
index 0000000000..4cedb36f08
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+++ b/js/src/tests/test262/built-ins/Array/prototype/find/array-altered-during-loop.js
@@ -0,0 +1,49 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.find
+description: >
+  The range of elements processed is set before the first call to `predicate`.
+info: |
+  22.1.3.8 Array.prototype.find ( predicate[ , thisArg ] )
+
+  ...
+  6. If thisArg was supplied, let T be thisArg; else let T be undefined.
+  7. Let k be 0.
+  8. Repeat, while k < len
+    ...
+    d. Let testResult be ToBoolean(Call(predicate, T, «kValue, k, O»)).
+  ...
+---*/
+
+var arr = ['Shoes', 'Car', 'Bike'];
+var results = [];
+
+arr.find(function(kValue) {
+  if (results.length === 0) {
+    arr.splice(1, 1);
+  }
+  results.push(kValue);
+});
+
+assert.sameValue(results.length, 3, 'predicate called three times');
+assert.sameValue(results[0], 'Shoes');
+assert.sameValue(results[1], 'Bike');
+assert.sameValue(results[2], undefined);
+
+results = [];
+arr = ['Skateboard', 'Barefoot'];
+arr.find(function(kValue) {
+  if (results.length === 0) {
+    arr.push('Motorcycle');
+    arr[1] = 'Magic Carpet';
+  }
+
+  results.push(kValue);
+});
+
+assert.sameValue(results.length, 2, 'predicate called twice');
+assert.sameValue(results[0], 'Skateboard');
+assert.sameValue(results[1], 'Magic Carpet');
+
+reportCompare(0, 0);