[Issue 3944] Require immutable annotation for new fields of class inherited from immutable class

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=3944

--- Comment #2 from dlangBugzillaToGithub <robert.schadek at posteo.de> ---
THIS ISSUE HAS BEEN MOVED TO GITHUB

https://github.com/dlang/dmd/issues/18176

DO NOT COMMENT HERE ANYMORE, NOBODY WILL SEE IT, THIS ISSUE HAS BEEN MOVED TO
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