Test case

Author: odersky

tests/neg/i16095.scala

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+package x
+
+import scala.annotation.*
+import scala.concurrent.*
+
+@capability
+class CpsTransform[F[_]] {
+     def await[T](ft: F[T]): { this } T = ???
+}
+
+inline def cpsAsync[F[_]] =
+  Test.InfernAsyncArg
+object Test {
+
+  class InfernAsyncArg[F[_]] {
+      def apply[A](expr: CpsTransform[F] ?=> A): F[A] = ???
+  }
+
+  def asyncPlus[F[_]](a:Int, b:F[Int])(using cps: CpsTransform[F]): { cps } Int =
+    a + cps.await(b)
+
+  def testExample1Future(): Unit =
+     val fr = cpsAsync[Future] {
+        val y = asyncPlus(1,Future successful 2)
+        y+1
+     }
+     val r = Await.result(fr)
+     assert(r == Success(3))
+
+}