1317395 - ArrayBuffer.prototype.byteLength should throw when the buffer is detached

Status: RESOLVED INVALID

(Core :: JavaScript: Standard Library, defect, P3)

Description

[André Bargull [:anba]]

Test case:
---
var ab = new ArrayBuffer(10);
detachArrayBuffer(ab);
ab.byteLength;
---

Expected: Throws TypeError
Actual: No exception thrown


Also see bug 1079853.

Comment 1

[Tom S [:evilpie]]

https://github.com/tc39/ecma262/issues/678 has now been resolved in favor of not throwing and returning +0.

Comment 2

[yozaam]

would this work?

In the line after JS_FRIEND_API uint32_t JS::GetArrayBufferByteLength(JSObject* obj)
https://searchfox.org/mozilla-central/source/js/src/vm/ArrayBufferObject.cpp#1672

if (IsDetachedArrayBufferObject(JSObject* obj); return 0; ?
https://searchfox.org/mozilla-central/source/js/public/ArrayBuffer.h#167

Comment 3

[André Bargull [:anba]]

This is actually no longer a valid bug, ArrayBuffer.prototype.byteLength has been changed to match our implementation. I'll close this bug.