Cannot access frame pointer of a struct with member function

[Andrey Zherikov via Digitalmars-d-learn]

Compilation of this code:
```d
auto foo(T)()
{
    return T();   // Error: cannot access frame pointer of 
`onlineapp.main.T`
}
void main()
{
    struct T
    {
        int a=1;
        void argsFunc(int a) {} // (1)
    }

    pragma(msg,foo!T());
}
```
fails with this error:
```
onlineapp.d(3): Error: cannot access frame pointer of 
`onlineapp.main.T`
onlineapp.d(14): Error: template instance `onlineapp.foo!(T)` 
error instantiating
onlineapp.d(14):        while evaluating `pragma(msg, foo!(T)())`
```
But when I comment out argsFunc function on line (1), it compiles 
successfully meaning that there is no issue to access frame 
pointer.

Is this a bug?