Crash after calling apollo.fetch(query:) - failed to demangle superclass of JSONRequest from mangled name: subject type x does not conform to protocol GraphQLOperation

[pietrobasso]

Summary

Crash after calling apollo.fetch(query:) - failed to demangle superclass of JSONRequest from mangled name: subject type x does not conform to protocol GraphQLOperation

See steps to reproduce.

Note: this crash is flaky. I didn't change anything in my query or generated Apollo swift files, and after a while the crash started to happen.

Version

1.17.0

Steps to reproduce

• apollo-ios-cli version: 1.17.0
• Call apollo.fetch(query:) with a valid query.
• Run the app from Xcode and trigger the apollo fetch.
• In the Xcode console I see the following error + a crash with Thread 1: signal SIGABRT with no extra explanation:

failed to demangle superclass of JSONRequest from mangled name '�\355b
': subject type x does not conform to protocol GraphQLOperation

Logs

failed to demangle superclass of JSONRequest from mangled name '�\355b
': subject type x does not conform to protocol GraphQLOperation
failed to demangle superclass of JSONRequest from mangled name '��b
': subject type x does not conform to protocol GraphQLOperation

Anything else?

No response

[calvincestari]

Hi @pietrobasso - never seen this type of issue before but a brief search for that type of error message points towards the way the libraries are linked and distributed.

Can you share some architectural details of your project and how Apollo iOS is used as a dependency - thanks.

[AnthonyMDev]

I'm closing this issue due to inactivity. If this is still unresolved, feel free to provide more information and we can re-open this, or create a new issue.

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