iOS17 beta1 new strange crash： NSInternalInconsistencyException:Mutating UITraitCollection is not supported

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Created Jun ’23

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iOS17 Found a lot crashs： NSInternalInconsistencyException: Mutating UITraitCollection is not supported，but app never call related APIs

also found that iOS17 new protocol，crash is happened when set its property

API_AVAILABLE(ios(17.0), tvos(17.0), watchos(10.0)) NS_SWIFT_UI_ACTOR @protocol UIMutableTraits <NSObject>

Last Exception Backtrace: 0 CoreFoundation 0x19e5924f0 __exceptionPreprocess + 164 1 libobjc.A.dylib 0x196c80480 objc_exception_throw + 60 2 Foundation 0x19dc4bd84 _userInfoForFileAndLine + 0 3 UIKitCore 0x1a11dda78 -[UITraitCollection setToolbarItemPresentationSize:] + 168 4 YYModel 0x11a7dcfdc ModelSetValueForProperty + 1684 5 YYModel 0x11a7d9eb4 ModelSetWithDictionaryFunction + 88 6 CoreFoundation 0x19e5b16b8 -[__NSDictionaryI __apply:context:] + 120 7 YYModel 0x11a7d9dac -[NSObject(YYModel) yy_modelSetWithDictionary:] + 300 8 YYModel 0x11a7dd04c ModelSetValueForProperty + 1796 9 YYModel 0x11a7d9eb4 ModelSetWithDictionaryFunction + 88 10 CoreFoundation 0x19e5b16b8 -[__NSDictionaryI __apply:context:] + 120 11 YYModel 0x11a7d9dac -[NSObject(YYModel) yy_modelSetWithDictionary:] + 300 12 YYModel 0x11a7dd964 ModelSetValueForProperty + 4124 13 YYModel 0x11a7d9eb4 ModelSetWithDictionaryFunction + 88 14 CoreFoundation 0x19e5b16b8 -[__NSDictionaryI __apply:context:] + 120 15 YYModel 0x11a7d9dac -[NSObject(YYModel) yy_modelSetWithDictionary:] + 300 16 YYModel 0x11a7dd04c ModelSetValueForProperty + 1796 17 YYModel 0x11a7d9eb4 ModelSetWithDictionaryFunction + 88

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Answer 1

Frameworks Engineer OP

Apple

Jun ’23

This looks like a problem with the YYModel library, or perhaps your code using it. If you believe this is an issue with iOS 17, please submit a feedback report and describe the issue, including the complete crash report, as well as a sample project that reproduces the issue.

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