[Issue 15726] [REG2.068.0] forward reference error for circular classes, RefCounted

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15726

--- Comment #5 from github-bugzilla at puremagic.com ---
Commit pushed to stable at https://github.com/dlang/dmd

https://github.com/dlang/dmd/commit/f429983efbeb78aa727827ae7d76a728996b4d4d
Fix wrong fields.dim value from test13613.

This is a regression from fixing issue 15726, which caused gdc to ICE because
it actually verifies the contents of the frontend AST are correct.

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