scala/scala — pull request #1733 by retronym (2012-12-08 11:08:48+00:00)
Title: SI-6614 Test case for fixed ArrayStack misconduct.

Not sure when it was fixed, but in 2.9.2 things were
messed up:

scala> (for (i <- 0 to 10) yield { val in = ArrayStack.tabulate(i)(_.toString); (in, (in filter (_ => true)) == in) }).mkString("\n")
res14: String =
(ArrayStack(),true)
(ArrayStack(0),true)
(ArrayStack(0, 1),true)
(ArrayStack(1, 2, null),false)
(ArrayStack(0, 1, 2, 3),true)
(ArrayStack(3, 4, null, null, null),false)
(ArrayStack(2, 3, 4, 5, null, null),false)
(ArrayStack(1, 2, 3, 4, 5, 6, null),false)
(ArrayStack(0, 1, 2, 3, 4, 5, 6, 7),true)
(ArrayStack(7, 8, null, null, null, null, null, null, null),false)
(ArrayStack(6, 7, 8, 9, null, null, null, null, null, null),false)

Review by @axel22