Hello, I am experiencing an unexpected issue related to PhotosKit, where an occasional crash is occurring in an area it shouldn't. I've provided the crash log below for reference.
The crash can be recreated by calling PHPhotoLibrary.cloudIdentifierMappings(forLocalIdentifiers:) with random identifiers, as demonstrated below:
let cloudIdentifiers = (0...10).map { _ in PHCloudIdentifier(stringValue: UUID().uuidString) }
let localIdsMap = PHPhotoLibrary.shared().localIdentifierMappings(for: cloudIdentifiers)
I've noticed that the method seems to crash consistently when an incorrect cloud identifier is input. This is surprising to me since the return type is [PHCloudIdentifier : Result<String, Error>], so I was anticipating an explicit error.
The issue can be reproduced on both Xcode 15.0 & iOS 17.2 and Xcode 14.3.1 & iOS 16.0.
While I'm fairly certain that only valid identifiers are used in my app, I would still like to know if there is a potential way to validate a cloud identifier prior to accessing this method?
Illia_Kniaziev
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Hello, I am experiencing an unexpected issue related to PhotosKit, where an occasional crash is occurring in an area it shouldn't. I've provided the crash log below for reference below:
Last Exception Backtrace:
0 CoreFoundation 0x1aa050860 __exceptionPreprocess + 164
1 libobjc.A.dylib 0x1a2363c80 objc_exception_throw + 60
2 CoreFoundation 0x1a9f68218 -[__NSDictionaryM setObject:forKeyedSubscript:] + 1184
3 Photos 0x1c11cb178 -[PHCloudIdentifierLookup _lookupCodeSpecificCloudIdentifierStrings:forIdentifierCode:] + 572
4 Photos 0x1c11cb278 -[PHCloudIdentifierLookup _lookupLocalIdentifiersForIdentifierCode:codeSpecificCloudIdentifierStrings:] + 92
5 Photos 0x1c11cbbec __69-[PHCloudIdentifierLookup lookupLocalIdentifiersForCloudIdentifiers:]_block_invoke + 88
6 CoreFoundation 0x1a9f67d70 NSDICTIONARY_IS_CALLING_OUT_TO_A_BLOCK + 24
7 CoreFoundation 0x1a9f67bec -[__NSDictionaryM enumerateKeysAndObjectsWithOptions:usingBlock:] + 288
8 Photos 0x1c11cbb40 -[PHCloudIdentifierLookup lookupLocalIdentifiersForCloudIdentifiers:] + 488
9 Photos 0x1c125e6e4 -[PHPhotoLibrary(CloudIdentifiers) localIdentifierMappingsForCloudIdentifiers:] + 96
10 Photos 0x1c1104f18 0x1c1101000 + 16152
"exceptionReason" : {"arguments":["-[__NSDictionaryM setObject:forKeyedSubscript:]"],"format_string":"*** %s: key cannot be nil","name":"NSInvalidArgumentException","type":"objc-exception","composed_message":"*** -[__NSDictionaryM setObject:forKeyedSubscript:]: key cannot be nil","class":"NSException"},
The crash can be recreated by calling PHPhotoLibrary.cloudIdentifierMappings(forLocalIdentifiers:) with random identifiers, as demonstrated below:
let cloudIdentifiers = (0...10).map { _ in PHCloudIdentifier(stringValue: UUID().uuidString) } let localIdsMap = PHPhotoLibrary.shared().localIdentifierMappings(for: cloudIdentifiers)
I've noticed that the method seems to crash consistently when an incorrect cloud identifier is input. This is surprising to me since the return type is [PHCloudIdentifier : Result<String, Error>], so I was anticipating an explicit error.
The issue can be reproduced on both Xcode 15.0 & iOS 17.2 and Xcode 14.3.1 & iOS 16.0.
While I'm fairly certain that only valid identifiers are used in my app, I would still like to know if there is a potential way to validate a cloud identifier prior to accessing this method?