[Issue 21807] Non-immutable data can be converted to immutable using function call in ctor

[d-bugmail--- via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=21807

--- Comment #4 from moonlightsenti...@disroot.org ---
Introduced by https://github.com/dlang/dmd/pull/1519

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