[Issue 24560] dmd crash on imported function with default parameter containing `new`

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24560

--- Comment #1 from hsteoh at qfbox.info ---
This bug has existed at least since 2.108.1, since ldc2 1.38.0, which is based
on 2.108.1, shows the same problem (segfault upon compiling the above code).

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