Merge pull request #890 from dotty-staging/fix-#879

Fix #879

Author: DarkDimius

src/dotty/tools/dotc/typer/Typer.scala

@@ -1027,7 +1027,7 @@ class Typer extends Namer with TypeAssigner with Applications with Implicits wit
    */
   def ensureConstrCall(cls: ClassSymbol, parents: List[Tree])(implicit ctx: Context): List[Tree] = {
     val firstParent :: otherParents = parents
-    if (firstParent.isType && !(cls is Trait))
+    if (firstParent.isType && !(cls is Trait) && !cls.is(JavaDefined))
       typed(untpd.New(untpd.TypedSplice(firstParent), Nil)) :: otherParents
     else parents
   }

tests/pos/java-interop/i879.java

@@ -0,0 +1,11 @@
+class Foo {
+  Foo(int i) {
+  }
+}
+
+
+class Bar extends Foo {
+  Bar() {
+    super(10);
+  }
+}