[Issue 23876] segfault / ICE regression with packages

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23876

--- Comment #1 from Jan Jurzitza <d.bugs at webfreak.org> ---
smaller reduced.d:

```d
import mystd.meta;
import mystd.range;
```

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