Removed error on naked, not fully complete, but I'll be doing more work on it during this Christmas, and some things do work. Fixed taking delegate of final class method. see mini/delegate3.d.

module bug17;

struct Vec
{
    Vec opAdd(ref Vec b) { return Vec(); }
    Vec opMul(double a) { return Vec(); }
}
void main()
{
    Vec foo;
    Vec bar;
    auto whee=foo+bar*1f;
}