diff options
Diffstat (limited to 'src/compiler/scala/tools/nsc/transform/AddInterfaces.scala')
-rw-r--r-- | src/compiler/scala/tools/nsc/transform/AddInterfaces.scala | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/src/compiler/scala/tools/nsc/transform/AddInterfaces.scala b/src/compiler/scala/tools/nsc/transform/AddInterfaces.scala index 1abaf1c1d6..71d595c9c4 100644 --- a/src/compiler/scala/tools/nsc/transform/AddInterfaces.scala +++ b/src/compiler/scala/tools/nsc/transform/AddInterfaces.scala @@ -299,15 +299,25 @@ abstract class AddInterfaces extends InfoTransform { } val mixinConstructorCalls: List[Tree] = { for (mc <- clazz.mixinClasses.reverse - if mc.hasFlag(lateINTERFACE) && mc != ScalaObjectClass) + if mc.hasFlag(lateINTERFACE)) yield mixinConstructorCall(implClass(mc)) } - (tree: @unchecked) match { + tree match { case Block(stats, expr) => // needs `hasSymbol` check because `supercall` could be a block (named / default args) - val (presuper, supercall :: rest) = stats span (t => t.hasSymbolWhich(_ hasFlag PRESUPER)) - // assert(supercall.symbol.isClassConstructor, supercall) - treeCopy.Block(tree, presuper ::: (supercall :: mixinConstructorCalls ::: rest), expr) + stats span (t => t.hasSymbolWhich(_ hasFlag PRESUPER)) match { + case (presuper, supercall :: rest) => + stats span (t => t.hasSymbolWhich(_ hasFlag PRESUPER)) + treeCopy.Block(tree, presuper ::: (supercall :: mixinConstructorCalls ::: rest), expr) + case (Nil, Nil) => + assert(clazz eq AnyValClass, clazz) + // AnyVal constructor - have to provide a real body so the + // jvm doesn't throw a VerifyError. But we can't add the + // body until now, because the typer knows that Any has no + // constructor and won't accept a call to super.init. + val superCall = Apply(Select(Super(This(tpnme.EMPTY), tpnme.EMPTY), nme.CONSTRUCTOR), Nil) + Block(List(superCall), Literal(Constant())) + } } } |