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Add a test case, proving i15661 is fixed #19432

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Jan 15, 2024
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Add a test case, proving i15661 is fixed #19432

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7 changes: 7 additions & 0 deletions tests/warn/i15661.scala
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Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
case class Composite[T](l: List[T], v: T)

def m(composite: Composite[?]): Unit =
composite match {
case Composite(l: List[Int], v: Int) => println(v) // warn: type test for List[Int] cannot be checked at runtime
case _ => println("This is not Int") // was: warn: Unreachable case except for null
}