[BUG] to_date produces wrong value on GPU for some corner cases

[andygrove]

Describe the bug

to_date (without a format specified) produces incorrect results for some invalid inputs. For example, the input string 3330-7 39 49 produces null on the CPU but produces the date 3330-07-01 on the GPU.

CPU: [3330-7 39 49: 1,null]

GPU: [3330-7 39 49: 1,3330-07-01]

Steps/Code to reproduce bug

I was experimenting with some basic fuzzing in the unit test.

private def generateTimestampStrings(n: Int): Seq[String] = {
  val validChars = "0123456789:-. \t\n"
  val rand = new Random(0) // fixed seed
  val list = new ListBuffer[String]()
  for (_ <- 0 to n) {
    val len = rand.nextInt(32)
    val str = new StringBuilder(len)
    for (_ <- 0 to len) {
      str.append(validChars.charAt(rand.nextInt(validChars.length)))
    }
    list += str.toString
  }
  list
}

Expected behavior
Results should be consistent between CPU and GPU.

Environment details (please complete the following information)
N/A

Additional context
N/A