[Issue 17548] [REG2.072.0] Forward reference error with scope function parameters

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=17548

--- Comment #3 from johanengelen at weka.io ---
Extra testcase by Elie, modifying fwdref2.d to:
```
struct S2 {
    // void bar(int arg = .fwdref1.cnst) {}
    S1 s;
    import fwdref2;
}
```

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