Turn test into a run test

Author: odersky

tests/pos/i8931.scala

@@ -0,0 +1,61 @@
+object test1:
+
+  trait Trait
+
+  trait Managed[T](x: T) {
+
+    def flatMap(f: T => Managed[T]): Managed[T] = new Managed[T](x) {
+
+      def make() = new Trait {
+        val t: T = x
+        val u =
+          try {
+            f(t)
+          } catch {
+            case e: Exception => ()
+          }
+      }
+    }
+  }
+
+object test2:
+
+  trait Trait
+
+  trait Managed[T](x: T) {
+    def xx = x
+
+    def flatMap(f: T => Managed[T]): Managed[T] = new Managed[T](x) {
+      def make() = new Trait {
+        val t: T = x
+        val u = {
+          def foo = f(t)
+          assert(foo.xx == 22)
+          foo
+        }
+      }
+      make()
+    }
+  }
+
+object test3:
+
+  trait Trait
+
+  trait Managed[T]:
+
+    def flatMap[U](f: T => Managed[U]) =
+      class C:
+        def make() =
+          class D:
+            def bar(): T = ???
+            val t: T = ???
+            val u =
+              def foo = (f(t), f(bar()))
+              foo
+          new D().u
+      ()
+
+@main def Test() =
+  val m = new test2.Managed[Int](22) {}
+  m.flatMap(x => new test2.Managed(x) {})