[Issue 23189] New: importC: 0 pointer cast doesn't compile

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23189

          Issue ID: 23189
           Summary: importC: 0 pointer cast doesn't compile
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: blocker
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: ryuukk.dev at gmail.com

The following code is valid in C, but doesn't compile in ImportC

```
 union nk_page_data *pd = (union nk_page_data*)((void*)((char*)(1 ? (tbl):
&((union nk_page_data*)0)->tbl) - (__builtin_offsetof(nk_page_data,tbl))));
```

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