Joris Verbogt created CB-6150:
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Summary: objc_msgSend causes EXC_BAD_ACCESS with plugins on arm64
Key: CB-6150
URL: https://issues.apache.org/jira/browse/CB-6150
Project: Apache Cordova
Issue Type: Bug
Components: iOS
Affects Versions: 3.4.0
Environment: iOS 7.0.6 arm64
Reporter: Joris Verbogt
This bug was mentioned before in https://issues.apache.org/jira/browse/CB-5888
The code in CDVCommandQueue line 197:
objc_msgSend(obj, normalSelector, command);
Causes a EXC_BAD_ACCESS on arm64.
According to Apple's docs at
https://developer.apple.com/library/ios/documentation/General/Conceptual/CocoaTouch64BitGuide/ConvertingYourAppto64-Bit/ConvertingYourAppto64-Bit.html
:
An exception to the casting rule described above is when you are calling the
objc_msgSend function or any other similar functions in the Objective-C runtime
that send messages. Although the prototype for the message functions has a
variadic form, the method function that is called by the Objective-C runtime
does not share the same prototype. The Objective-C runtime directly dispatches
to the function that implements the method, so the calling conventions are
mismatched, as described previously. Therefore you must cast the objc_msgSend
function to a prototype that matches the method function being called.
This bug can be solved by explicit casting, like so:
((void(*)(id, SEL, id))objc_msgSend)(obj, normalSelector, command);
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