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Java varargs not generated with separate compilation #10071

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scabug opened this issue Nov 18, 2016 · 2 comments
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Java varargs not generated with separate compilation #10071

scabug opened this issue Nov 18, 2016 · 2 comments
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@dragos
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2.12.2

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@scabug
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scabug commented Nov 18, 2016 •
edited by retronym

varargs inherited annotated methods don't always generate a Java-style vararg method. For example:

// Props.scala
import foo.AbstractProps

class Props extends AbstractProps
// foo/AbstractProps.scala
package foo

import scala.annotation.varargs

trait AbstractProps {
  @varargs
  def create(x: Int, y: Int*): AbstractProps = null
}

When the two files are compiled together, class Props has a Java-style vararg method:

$ javap -classpath /tmp Props
Compiled from "Props_1.scala"
public class Props implements foo.AbstractProps {
  public foo.AbstractProps create(int, scala.collection.Seq<java.lang.Object>);
  public foo.AbstractProps create(int, int...);
  public Props();
}

When only Props.scala is compiled, the Java forwarder is missing.
@scabug
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scabug commented Nov 18, 2016

Imported From: https://issues.scala-lang.org/browse/SI-10071?orig=1
Reporter: @dragos
Affected Versions: 2.11.8, 2.12.0

@scabug
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scabug commented Nov 25, 2016

@dragos said:
Backport to 2.11.x pending.

@scabug scabug closed this as completed Nov 25, 2016
@scabug scabug added this to the 2.12.2 milestone Apr 7, 2017
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