double -> double[]... | feature or bug?

[Andrej Mitrovic]

DMD 2.051 with -unittest:

import std.algorithm, std.range, std.stdio : writeln;

void main() {}

void average(double[]) { writeln("non-variadic"); }
void average(double[]...) { writeln("variadic"); }

unittest {
    average(1.5);   // writes "variadic"
}