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# fixed: EXC_BAD_ACCESS _mapStrHash(_NXMapTable*, void const*)/class_ copyProtocolList by dkimitsa · Pull Request #588 · MobiVM/robovm · GitHub
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# fixed: EXC_BAD_ACCESS _mapStrHash(_NXMapTable*, void const*)/class_ copyProtocolList #588
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Merged
Tom-Ski
merged 1 commit into
MobiVM:master
from
dkimitsa:fix/objc_runtime_class_info_workaround
Oct 19, 2021
Merged
# fixed: EXC_BAD_ACCESS _mapStrHash(_NXMapTable*, void const*)/class_ copyProtocolList #588
Tom-Ski
merged 1 commit into
MobiVM:master
from
dkimitsa:fix/objc_runtime_class_info_workaround
Oct 19, 2021
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…copyProtocolList There is a bug observed in iOS12 that causes not all Objective-C class fields properly initialized in Class instance of Swift classes. This causes a crash in APIs like class_copyProtocolList to crash as it faces not initialized data. Example of such class is `Swift.__EmptyDictionarySingleton`. Workaround for this case is to call [NSObject class] selector that initializes all structs. ObjCClass is not always NSObject check for responds to selector is required here. similar case: dotnet/macios#6293
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There is a bug observed in iOS12 that causes not all Objective-C class fields properly initialized
in Class instance of Swift classes. This causes a crash in APIs like class_copyProtocolList to crash
as it faces not initialized data. Example of such class is
Swift.__EmptyDictionarySingleton.Workaround for this case is to call [NSObject class] selector that initializes all structs.
ObjCClass is not always NSObject check for responds to selector is required here.
similar case: dotnet/macios#6293