1 files changed, 47 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/eval-code/direct/var-env-func-init-global-update-configurable.js b/js/src/tests/test262/language/eval-code/direct/var-env-func-init-global-update-configurable.js
new file mode 100644
index 0000000000..94150361d5
--- /dev/null
+++ b/js/src/tests/test262/language/eval-code/direct/var-env-func-init-global-update-configurable.js
@@ -0,0 +1,47 @@
+// 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-evaldeclarationinstantiation
+description: Modification of previously-existing configurable global property
+info: |
+    [...]
+    15. For each production f in functionsToInitialize, do
+        a. Let fn be the sole element of the BoundNames of f.
+        b. Let fo be the result of performing InstantiateFunctionObject for f
+           with argument lexEnv.
+        c. If varEnvRec is a global Environment Record, then
+           i. Perform ? varEnvRec.CreateGlobalFunctionBinding(fn, fo, true).
+    [...]
+
+    8.1.1.4.18 CreateGlobalFunctionBinding
+
+    [...]
+    5. If existingProp is undefined or existingProp.[[Configurable]] is true,
+       then
+       a. Let desc be the PropertyDescriptor{[[Value]]: V, [[Writable]]: true,
+          [[Enumerable]]: true, [[Configurable]]: D}.
+    6. Else,
+       [...]
+    7. Perform ? DefinePropertyOrThrow(globalObject, N, desc).
+    [...]
+flags: [noStrict]
+includes: [propertyHelper.js]
+---*/
+
+var initial = null;
+
+Object.defineProperty(this, 'f', {
+  enumerable: false,
+  writable: false,
+  configurable: true
+});
+
+eval('initial = f; function f() { return 345; }');
+
+verifyEnumerable(this, 'f');
+verifyWritable(this, 'f');
+verifyConfigurable(this, 'f');
+assert.sameValue(typeof initial, 'function');
+assert.sameValue(initial(), 345);
+
+reportCompare(0, 0);