https://issues.dlang.org/show_bug.cgi?id=17178

dmd -c -o- bar.d
Error: namespace bar.std conflicts with import bar.std at bar.d(2)

```
module bar;
import std.exception;
extern (C++, std) { struct Foo1 { } }
```

this seems like a serious blocker to interface with C++ ; what's a workaround?