Constructor call must be in a constructor

[Loopback]

Hi!

While implementing and overloading several different operators for my
structure I've got stuck with an error.

As noticed in the attachment, in my opBinaryRight function I mimic the
opBinary (left) operator by instantiating the structure itself to avoid
implementing duplicates of the binary operator overloads.

The opBinaryRight operator is defined as following:

DVector2 opBinaryRight(string op, T)(T lhs) if(Accepts!T)
{
	// Error: template instance vector.DVector2.__ctor!(DVector2) error 
instantiating
	return DVector2(lhs).opBinary!op(this);
}

I create an additional DVector2 structure and then calls the opBinary
operator. When creating this DVector2 structure the following
constructor gets called:

this(T)(T arg) if(Accepts!T)
{
	static if(isScalar!T)
		this(arg, arg);
	else
		// Error: constructor call must be in a constructor
		this(arg.tupleof);
}

As one can clearly see, the constructor call is within a constructor.
Now my questions are; is this a bug with DMD or is it something with my
code example and is there any workarounds/solutions?
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