Add test

Author: liufengyun

tests/run/t8803.check

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+a
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+c
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tests/run/t8803.scala

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+class A {
+  def m = "a"
+  protected def n = "a"
+}
+
+trait B {
+  def m = "b"
+  protected def n = "b"
+}
+
+class C extends A with B {
+  override def m = "c"
+  override protected def n = "c"
+
+  val f1 = () => super[A].m
+  val f2 = () => super[B].m
+  val f3 = () => super.m
+  val f4 = () => this.m
+
+  val g1 = new runtime.AbstractFunction0[String] { def apply() = C.super[A].m }
+  val g2 = new runtime.AbstractFunction0[String] { def apply() = C.super[B].m }
+  val g3 = new runtime.AbstractFunction0[String] { def apply() = C.super.m }
+  val g4 = new runtime.AbstractFunction0[String] { def apply() = C.this.m }
+
+  val h1 = () => super[A].n
+  val h2 = () => super[B].n
+  val h3 = () => super.n
+  val h4 = () => this.n
+
+  val i1 = new runtime.AbstractFunction0[String] { def apply() = C.super[A].n }
+  val i2 = new runtime.AbstractFunction0[String] { def apply() = C.super[B].n }
+  val i3 = new runtime.AbstractFunction0[String] { def apply() = C.super.n }
+  val i4 = new runtime.AbstractFunction0[String] { def apply() = C.this.n }
+}
+
+object Test extends App {
+  val c = new C
+  println(c.f1())
+  println(c.f2())
+  println(c.f3())
+  println(c.f4())
+
+  println(c.g1())
+  println(c.g2())
+  println(c.g3())
+  println(c.g4())
+
+  println(c.h1())
+  println(c.h2())
+  println(c.h3())
+  println(c.h4())
+
+  println(c.i1())
+  println(c.i2())
+  println(c.i3())
+  println(c.i4())
+}