[Issue 23202] New: assigning class.tupleof with a string segfaults at runtime, also with @safe

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23202

          Issue ID: 23202
           Summary: assigning class.tupleof with a string segfaults at
                    runtime, also with @safe
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: d.bugs at webfreak.org

Example code:

```
@safe:

class S
{
    string str;
}

void main()
{
    auto s = S.init.tupleof;
}
```

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