Catching excecptions in the MSVC debugger when running Win64

[Lewis]

I can't seem to catch a D exception on win64 in the Visual Studio 
debugger. I'm using:

- DMD compiler (2.094.2)
- VisualD 1.1.0
- Visual Studio 2019
- Building a Win64 executable
- Debugger set to Visual Studio
- All Win32 and D exceptions enabled in the Exception Settings 
window in VS

Test code:

```
import std.file : copy;
int main()
{
     copy("filethatdoesnotexist.bla", "othernonexistentfile.bla");
     return 0;
}
```

I've tried manually rebuilding phobos in debug so I can see 
inside it. I can step into the copy(), all the way until the 
point where it constructs the FileException object. But the 
debugger never seems to catch the exception.

Instead the debugger breaks in deh_win64_posix.d:493 on the call 
to terminate() at the end of _d_throwc(). But this just causes 
the debugger to catch *0xC0000096: Privileged instruction* 
(presumably due to the hlt instruction inside terminate()), 
instead of actually understanding the D FileException that got 
thrown. Nothing is printed to the output window regarding the D 
exception

Is this the expected behaviour? If not, how to I get visual 
studio to properly catch D exceptions for a win64 executable?