Is this a bug? `static if` fails silently.

[John Colvin via Digitalmars-d]

On Tuesday, 4 November 2014 at 09:07:10 UTC, deadalnix wrote:
> On Tuesday, 4 November 2014 at 09:00:12 UTC, Meta wrote:
>> struct Test(T)
>> {
>> 	static if (is(typeof(T) == int))
>> 	{
>> 		pragma(msg, "test");
>> 		
>> 		this(T t)
>> 		{
>> 			this.t = t;
>> 		}
>> 	}
>> }
>>
>> void main()
>> {
>>        //Nothing is printed
>> 	Test!int t;
>> }
>>
>> Didn't this code used to failed at the point of `typeof(T)`? 
>> Has this changed since previous releases?
>
> It is not static if, it is is. Is is defined as false for 
> invalid types.

a std.traits.TypeOf that errors out on non-types would be nice.