GHC 8.6.1 lost fix for #6098
Summary
Issue #6098 (closed) got fixed in GHC 7.8.1. The bug re-appeared in GHC versions >= 8.6.1
Steps to reproduce
See ticket #6098 (closed)
Expected behavior
The output of head allItems should be 1 and not an error message.
Environment
- GHC version used: >= 8.6.1
- Operating System: Debian 10
Comment
Unfortunately there is no test case and no reference to the patch that was used to fix #6098 (closed).