28752 2009-08-26 15:40:38 -0700 this in JSON.parse reviver is the global object 2009-08-27 16:01:55 -0700 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) PC OS X 10.5 RESOLVED FIXED http://lucassmith.name/pub/browser_bugs/wk/reviver_this.html P2 Normal --- 1 lsmith webkit-unassigned oliver oldest_to_newest 142981 0 lsmith 2009-08-26 15:40:38 -0700 ES 5 spec states that the Walk abstract function calls the reviver function's [[Call]] "passing holder as the this value" Currently WebKit's JSON.parse implementation passes the global object as this. Aside from the spec violation, this also prevents the reviver from creating additional properties on the object or referencing other properties of the current object for value determination during parse. Any new properties created are added to the global object. I noted this while reviewing my YUI examples for the JSON Utility (which defers to native implementations if present). http://developer.yahoo.com/yui/examples/json/json_convert_values.html Note: The page behaves correctly because it is either (if viewed before 9/2/09) using version 2.7.0 which is not leveraging native behavior , or it is (if viewed after 9/2/09) using version 2.8.0 and is configured NOT to use native behavior specifically because of this bug. 143068 1 38658 oliver 2009-08-26 23:33:35 -0700 Created attachment 38658 Patch v1 143073 2 38658 oliver 2009-08-26 23:48:54 -0700 Comment on attachment 38658 Patch v1 Sam mentioned some issues, and i realised there's an entire class of bug i had failed to notice. 143082 3 38661 oliver 2009-08-27 00:59:24 -0700 Created attachment 38661 Patch v1 143084 4 38661 barraclough 2009-08-27 01:37:00 -0700 Comment on attachment 38661 Patch v1 R+ with exception throw change from IRC. 143085 5 oliver 2009-08-27 01:39:58 -0700 Committed r47812 143219 6 mrowe 2009-08-27 15:54:49 -0700 Should this now be closed? 38658 2009-08-26 23:33:35 -0700 2009-08-27 00:59:14 -0700 Patch v1 bug-28752-20090826233334.patch text/plain 18806 oliver ZGlmZiAtLWdpdCBhL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZyBiL0phdmFTY3JpcHRDb3JlL0No YW5nZUxvZwppbmRleCBiOTU5OGVjLi5jMmNkYzZhIDEwMDY0NAotLS0gYS9KYXZhU2NyaXB0Q29y ZS9DaGFuZ2VMb2cKKysrIGIvSmF2YVNjcmlwdENvcmUvQ2hhbmdlTG9nCkBAIC0xLDMgKzEsMjgg QEAKKzIwMDktMDgtMjYgIE9saXZlciBIdW50ICA8b2xpdmVyQGFwcGxlLmNvbT4KKworICAgICAg ICBSZXZpZXdlZCBieSBOT0JPRFkgKE9PUFMhKS4KKworICAgICAgICAndGhpcycgaW4gSlNPTi5w YXJzZSByZXZpdmVyIGlzIHRoZSBnbG9iYWwgb2JqZWN0CisgICAgICAgIGh0dHBzOi8vYnVncy53 ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD0yODc1MgorCisgICAgICAgIFRoaXMgaXMgYSB0ZWNo bmljYWxseSBzaW1wbGUgY2hhbmdlLCB3ZSBtZXJlbHkgdXBkYXRlIHRoZSBjb2RlIGZvciBjYWxs aW5nCisgICAgICAgIHRoZSByZXZpdmVyIGZ1bmN0aW9uIHRvIHBhc3MgdGhlIGNvcnJlY3QgdGhp cyBvYmplY3QuICBEb2luZyBzbyBob3dldmVyCisgICAgICAgIGV4cG9zZXMgdGhlIGhvbGRlciB0 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