I've define a type:

type Foo is record
   bar : Positive;
end record;

I want to create a function that returns an instance of the record:

function get_foo return Foo is
    return (1);
end get_foo;

But Ada won't let me, saying "positional aggregate cannot have one argument".
Stupidly trying, I've added another dumb field to the record, and then return (1, DOESNT_MATTER); works!

How do I tell Ada that's not a positional aggregate, but an attempt to create a record?