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object ImplicitBugReport {
trait Exp[+T]
trait CanBuildExp[-Elem, +To] extends (Exp[Elem] => To)
trait TraversableExp[T, ExpT <: Exp[T]] extends Exp[Traversable[T]]
implicit def canBuildExp[T]: CanBuildExp[T, Exp[T]] = ???
implicit def canBuildExpTrav[T, ExpT <: Exp[T]](implicit c: CanBuildExp[T, ExpT]): CanBuildExp[Traversable[T], TraversableExp[T, ExpT]] = ???
def toExpTempl[T, That](t: T)(implicit c: CanBuildExp[T, That]): That = ???
def testBug() {
val a1 = toExpTempl(Seq(1, 2, 3, 5))
}
}
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