Expected Behavior

We can use the ctor public Joined(T first, T second, IEnumerable lst, params T[] items)

Actual Behavior

It chrashes with index out of bounds

Mention any other details that might be useful

[Fact]
public void JoinsFirstSecondAndEnum()
{
Assert.True(
new LengthOf(
new Joined(
"first",
"second",
new ManyOf("third", "fourth")
)
).Value() == 4,
"cannot join first second and enum together");
}

Steps to reproduce the behavior

The log given by the failure.