[Issue 23222] New: vcg-ast segfaults on aliases to parent module

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23222

          Issue ID: 23222
           Summary: vcg-ast segfaults on aliases to parent module
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: minor
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: maxhaton at gmail.com

```
module a;

alias m = __traits(parent, {});
```

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