33360 2010-01-07 20:26:37 -0800 Web Inspector: Console-invoked ObjC methods lose their string parameters 2016-12-14 11:04:09 -0800 1 1 1 Unclassified WebKit WebCore JavaScript 528+ (Nightly build) All All RESOLVED FIXED InRadar P2 Normal --- 1 jalkut webkit-unassigned bburg bweinstein ggaren joepeck keishi oliver pfeldman pmuellr remy.saissy rik oldest_to_newest 178501 0 jalkut 2010-01-07 20:26:37 -0800 1. Inspect a document whose DOM has a WebScriptObject attached with exposed methods. 2. Arrange that one of those exposed methods takes a string parameter, e.g.: - (void) debugLog:(NSString*)theLogString { NSLog(@"%@", theLogString); } 3. Attempt to call the bridged method from the inspector's console window, e.g.: window.myObject.debugLog_("hello there!"); RESULT: Although the bridged method is called, the "hello there!" string does not survive the transition, and arrives as a nil parameter. Expected: The strings generated in the context of the Console/Inspector should survive as well as strings evaluated and passed in the course of a page's imported scripts. Note that it's not just a literal vs. object type of problem. I declared a string object in the console as: var myString = new String("hello there!"); And passing that variable to the bridged method fails as well. I did a cursory hunt through WebCore before I gave up trying to find the root cause. But my naive assumption is it has something to do with the convertValueToObjcValue: method in objc_utility.mm. It appears that a valid JSValue exists at this point, and even claims to be a string, but the block of code starting with "case ObjcObjectType:" is not able to locate a root object for the JSValue. Hope this helps, Daniel 178502 1 jalkut 2010-01-07 20:27:33 -0800 I meant to mention that the buggy behavior is true as of trunk WebKit sources, checked out earlier today. 178511 2 mrowe 2010-01-07 21:12:35 -0800 Daniel, this would be easier to test and investigate if there was a simple test application that could easily be used to demonstrate the problem. 178514 3 mrowe 2010-01-07 21:13:10 -0800 <rdar://problem/7521765> 178636 4 46131 mrowe 2010-01-08 04:30:58 -0800 Created attachment 46131 Patch to MiniBrowser that allows testing of this issue After applying this patch to MiniBrowser the issue can be reproduced by opening the inspector from the context menu and entering “browser.log_(‘I am not null!’)” at the console. 178679 5 jalkut 2010-01-08 08:06:24 -0800 Mark, sorry I didn't include an example. Thanks for running with it and putting together the patch for easily reproducing it. 495573 6 remy.saissy 2011-11-03 10:05:11 -0700 (In reply to comment #5) > Mark, sorry I didn't include an example. Thanks for running with it and putting together the patch for easily reproducing it. Hi, I've attached a patch for this issue. It applies to WebCore/bridge/objc/objc_utility.mm. I was also not able to find the root cause but I've found that it has something to do with RootObject initialization. Indeed, the call to findRootObject() in objc_utility.mm returns nil whereas it should return a valid pointer since the conversion code is in _convertValueToObjcValue:. I've also found that - (void)setValue:(id)value forKey:(NSString *)key in bindings/objc/WebScriptObject.mm uses a rootObject to add the webscript. Maybe an initialization is missing here. Hope this helps, Rémy 495577 7 113513 remy.saissy 2011-11-03 10:07:00 -0700 Created attachment 113513 Patch for the issue 495616 8 joepeck 2011-11-03 10:35:46 -0700 (In reply to comment #7) > Created an attachment (id=113513) [details] > Patch for the issue Something appears wrong with this patch. It shows an entirely replaced file instead of what differed within the file. Could you upload a new patch? Also, it looks like you used tabs for your changes. You should follow WebKit's style of 4 spaces no tabs. 495635 9 113521 remy.saissy 2011-11-03 10:56:28 -0700 Created attachment 113521 Patch Hi Joseph, a ^M issue, sorry. I fixed it, here is the new patch. Regards, Rémy 1259802 10 bburg 2016-12-14 10:22:09 -0800 I am unable to reproduce this issue. A test application would a help a lot. Please re-open if this is still relevant to anything. 1259816 11 jalkut 2016-12-14 11:04:09 -0800 Happily, I can confirm that this is not reproducable in the WebKit that ships with macOS 10.12.2. 46131 2010-01-08 04:30:58 -0800 2010-06-10 20:11:49 -0700 Patch to MiniBrowser that allows testing of this issue bug-33360.patch text/plain 1562 mrowe ZGlmZiAtLWdpdCBhL0FwcENvbnRyb2xsZXIubSBiL0FwcENvbnRyb2xsZXIubQppbmRleCAzZDNk MDk1Li4yMTUyOWVjIDEwMDY0NAotLS0gYS9BcHBDb250cm9sbGVyLm0KKysrIGIvQXBwQ29udHJv bGxlci5tCkBAIC00NCw2ICs0NCw4IEBACiAKIC0gKHZvaWQpYXBwbGljYXRpb25EaWRGaW5pc2hM YXVuY2hpbmc6KE5TTm90aWZpY2F0aW9uICopYU5vdGlmaWNhdGlvbgogeworICAgIFtbTlNVc2Vy RGVmYXVsdHMgc3RhbmRhcmRVc2VyRGVmYXVsdHNdIHNldEJvb2w6WUVTIGZvcktleTpAIldlYktp dERldmVsb3BlckV4dHJhcyJdOworCiAgICAgLy8gQ3JlYXRlIGEgc2hhcmVkIFdlYkhpc3Rvcnkg b2JqZWN0CiAgICAgV2ViSGlzdG9yeSAqbXlIaXN0b3J5ID0gW1tXZWJIaXN0b3J5IGFsbG9jXSBp bml0XTsKICAgICBbV2ViSGlzdG9yeSBzZXRPcHRpb25hbFNoYXJlZEhpc3Rvcnk6bXlIaXN0b3J5 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