iOS11 UITextField memory leak

This appears to be fixed in Xcode 9.3 beta

I have a different fix for that, a little bit safer I think 🙂. Following code uses Aspects and TPDWeakProxy:

@implementation UITextField (iOS_11_2_Fix)

+ (void)agc_fixMe {
    NSError *error = nil;
    Class contentViewClass = NSClassFromString(@"_UITextFieldContentView");
    SEL initializerSelector = NSSelectorFromString(@"initWithContentContextProvider:");
    if (![contentViewClass respondsToSelector:initializerSelector]) {
        return;
    }
    id<AspectToken> token =
    [contentViewClass aspect_hookSelector:initializerSelector
                              withOptions:AspectPositionInstead
                               usingBlock:^(id<AspectInfo> aspectInfo, id provider) {
                                   NSInvocation *invocation = aspectInfo.originalInvocation;
                                   id originalProvider = aspectInfo.arguments.lastObject;
                                   TPDWeakProxy *proxyProvider = [[TPDWeakProxy alloc] initWithObject:originalProvider];
                                   [invocation setArgument:&proxyProvider atIndex:2];
                                   [invocation invoke];

                                   // Eagerly load _fieldEditor to prevent crash at dealloc
                                   // (looks like another iOS bug which is not visible because of the retain cycle).
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
                                   [originalProvider performSelector:NSSelectorFromString(@"_fieldEditor")];
#pragma clang diagnostic pop
                               }
                                    error:&error];

    NSAssert(token != nil, @"Token should not be nil");
    NSAssert(error == nil, @"Error should be nil, was %@", error);
}

@end