OK
```d
void foo(size_t a)() {}
@property size_t val() { return 0; }
pragma(msg, foo!(val).mangleof);
```
Used to print:
    _D3bug26__T3fooS15_D3bug3valFNdZmZ3fooFNaNbNfZv
Now prints:
    _D3bug12__T3fooVmi0Z3fooFNaNbNiNfZv