SI-6632 SI-6633 Fixes issues and data corruption in ListBuffer

 - Disallow negative positions for ListBuffer#insert/insertAll/update
 - Fix data corruption issue in ListBuffer#insert

1 files changed, 33 insertions, 0 deletions

diff --git a/test/files/run/t6633.scala b/test/files/run/t6633.scala
new file mode 100644
index 0000000000..bd993c8d88
--- /dev/null
+++ b/test/files/run/t6633.scala
@@ -0,0 +1,33 @@
+object Test extends App {
+  import collection.mutable.ListBuffer
+
+  def newLB = ListBuffer('a, 'b, 'c, 'd, 'e)
+
+  val lb0 = newLB
+
+  try {
+    lb0.insert(9, 'x)
+  } catch {
+    case ex: IndexOutOfBoundsException => println(ex)
+  }
+
+  val lb1 = newLB
+
+  try {
+    lb1.insert(9, 'x)
+  } catch {
+    case ex: IndexOutOfBoundsException =>
+  }
+
+  val replStr = scala.runtime.ScalaRunTime.replStringOf(lb1, 100)
+  if (replStr == "ListBuffer('a, 'b, 'c, 'd, 'e)\n")
+    println("replStringOf OK")
+  else
+    println("replStringOf FAILED: " + replStr)
+
+  val len = lb1.length
+  if (len == 5)
+    println("length OK")
+  else
+    println("length FAILED: " + len)
+}
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