Test that fields are correctly set before super constructor is called.

Author: DarkDimius

tests/run/i763.scala

@@ -0,0 +1,12 @@
+abstract class A {
+  val s: Int
+  assert(s == 1)
+}
+
+class B(val s: Int) extends A
+
+object Test extends B(1) {
+  def main(args: Array[String]): Unit = {
+    s
+  }
+}