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Fix a crash that may occur when resolving a thread-safe reference #8722

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Fix a crash that may occur when resolving a thread-safe reference #8722

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e70ba1f
Check RLMObjectBase for null after resolving thread safe reference
PoltoraIvana Nov 26, 2024
0418d34
Add new case to RealmError
PoltoraIvana Nov 26, 2024
9286062
Rename new case in RealmError
PoltoraIvana Nov 26, 2024
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4 changes: 4 additions & 0 deletions Realm/RLMError.h
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Original file line number Diff line number Diff line change
Expand Up @@ -199,6 +199,10 @@ typedef RLM_ERROR_ENUM(NSInteger, RLMError, RLMErrorDomain) {
subscription or the server will reject the write.
*/
RLMErrorNoSubscriptionForWrite = 22,
/ **
Denotes an error that occurs when resolving thread safe reference returns a nil object.
*/
RLMErrorObjectNotFound = 23
};

#pragma mark - RLMSyncError
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7 changes: 7 additions & 0 deletions Realm/RLMObjectBase.mm
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Original file line number Diff line number Diff line change
Expand Up @@ -723,6 +723,13 @@ - (void)addNotificationBlock:(RLMObjectNotificationCallback)block
return;
}
RLMObjectBase *obj = [_realm resolveThreadSafeReference:tsr];
if (!obj) {
error = [NSError errorWithDomain:RLMAppErrorDomain
code:RLMErrorObjectNotFound
userInfo:nil];
block(nil, nil, nil, nil, error);
return;
}

_object = realm::Object(_realm->_realm, *obj->_info->objectSchema, obj->_row);
_token = _object.add_notification_callback(ObjectChangeCallbackWrapper{block, obj},
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