Stripe iOS SDK - Incompatible block pointer types sending

Question

The Stripe SDK is causing a build a failure. The specific error is:

Incompatible block pointer types sending '__strong STPAPIResponseBlock _Nonnull' (aka 'void (^__strong)(ResponseType _Nullable __strong, NSHTTPURLResponse * _Nullable __strong, NSError * _Nullable __strong)')

to parameter of type 'void (^ _Nonnull)(STPSource * _Nullable __strong, NSHTTPURLResponse * _Nullable __strong, NSError * _Nullable __strong)'

The code it is failing on is the following within STPAPIClient.m...

- (NSURLSessionDataTask *)retrieveSourceWithId:(NSString *)identifier clientSecret:(NSString *)secret responseCompletion:(STPAPIResponseBlock)completion {
    NSString *endpoint = [NSString stringWithFormat:@"%@/%@", APIEndpointSources, identifier];
    NSDictionary *parameters = @{@"client_secret": secret};
    return [STPAPIRequest<STPSource *> getWithAPIClient:self
                                               endpoint:endpoint
                                             parameters:parameters
                                           deserializer:[STPSource new]
                                             completion:completion];
}

Everything was working fine - and then I believe Xcode updated. Now I get this problem. I tried building a new app from scratch with nothing in it other then the Stripe SDK (installed via CocoaPods) and that failed to.

Before I rollback to an earlier version of Xcode - any help would be much appreciated.

Answer 1

XCode 11.4 broke the stripe pod v19.0 and it got fixed in v19.0.1
to upgrade the stripe pod, run pod update Stripe

Answer 2

Update with fixes: "We've released v14.0.1, v15.0.2, v17.0.3, and v19.0.1 to Cocoapods with fixes for this issue.": https://github.com/stripe/stripe-ios/issues/1525#issuecomment-604037716

Older post info:

This is fixed by Stripe in this change: https://github.com/stripe/stripe-ios/pull/1526

If you're stuck on an older version of Stripe, you can try applying the two changes to your local version. (Changes at https://github.com/stripe/stripe-ios/pull/1526/files).