Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

This project showcases a weird error where callback closure is not called.

• This happens with the default library selected (URLSession). With Alamofire, everything is fine.
• In the 5.0.0 stable version, the error is not happening
• Snapshot Commit: 90ed129 from 2020-01-22
• Tested with Xcode 12.3 (12C33) on macOS Catalina 10.15.7 (19H15)
• Try switching the generator from snapshot to stable pod in Podfile to see the change.

openapi-generator version

5.0.1-snapshot (commit 90ed129)

OpenAPI declaration file content or url

See test-project: https://github.com/fl034/Test-OAS

Generation Details

• Swift5 with defaults

Steps to reproduce

Run sample project

Related issues/PRs

Nothing found

Suggest a fix

• The issue seems to be in URLSessionImplementations.swift in line 137. self seems to be deallocated immediately, because it’s weak.
• When I remove [weak self] it works again. But this isn’t the root of the problem, since the stable version also has [weak self]