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object Msg {
trait T
trait TSeq
object TSeq {
implicit def fromSeq(s: Seq[T]): TSeq = error("stub")
}
def render {
val msgs: TSeq = (List[(Any, Any)]().flatMap {
case (a, b) => {
a match {
case _ => b match {
case _ => error("stub")
}
}
}
} /*: Seq[T] Adding this type annotation avoids the compile error.*/)
}
}
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