[Issue 24241] Uncaught Default argument error

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24241

--- Comment #4 from ponce <aliloko at gmail.com> ---
Oh this is a voluntary change?

In practice, what we've had is that code that is produced by people after that
change, break build of those that use earlier compilers. It's a breaking change
that I feel we could warn about, since it seems named arguments aren't already
there?

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