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WebKit Bugzilla |
| Summary: | Storing a reference to WorkerContext.postMessage() and calling it later yields a TypeError | ||||||||
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| Product: | WebKit | Reporter: | Andrew Wilson <atwilson@chromium.org> | ||||||
| Component: | WebCore JavaScript | Assignee: | Dmitry Titov <dimich@chromium.org> | ||||||
| Status: | RESOLVED FIXED | ||||||||
| Severity: | Normal | CC: | ap@webkit.org, dimich@chromium.org, sam@webkit.org | ||||||
| Priority: | P2 | ||||||||
| Version: | 528+ (Nightly build) | ||||||||
| Hardware: | PC | ||||||||
| OS: | Mac OS X 10.5 | ||||||||
| Bug Depends on: | 27420 | ||||||||
| Bug Blocks: | |||||||||
| Attachments: |
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The test case works in Chromium, so it's somewhere in the JSC bindings.
On a related note, the following line of code from Worker Context results in a TypeError also: postMessage.call(null, "foobar");
Created an attachment (id=33094) [details]
test case
test case that shows this problem (passes on FF/Chrome, fails on Safari 4)
Created an attachment (id=33209) [details]
proposed patch
This is dependent on 27420 as it relies on the IsWorkerContext attribute added in that patch.
(From update of attachment 33209 [details])
Awesome. Thanks for the patch.
assingning to me for landing
Landed: http://trac.webkit.org/changeset/46371
There are a number of functions defined at global scope in WorkerContext - for example, setTimeout() and postMessage() are both defined in the worker global context. It's perfectly valid for worker code to do this: postMessage("hello"); However, if the worker code does this instead, it gets a TypeError: var saved = postMessage; saved("hello");