Overload resolution ambiguous for implicit cast

[pvginkel]

There is a failing unit test which pertains to overload resolution. The following case fails to find the correct overload:

void Method(float a) { }
void Method(double a) { }

Method(1)

The problem here is that integer can be implicitly casted to both float and double, and the overload resolution mechanism currently doesn't score overloads which are matched through implicit casts. C# b.t.w. calls the method with the float argument.