Missing parameter list in JavaGeneric signature

[nicolasstucki]

object Foo {
  def foo[U](a: Int, b: Double)(c: Boolean, d: String)(e: Object): Int = 1
}

will generate the signature public <U> int Foo$.foo(int,double) which misses all parameters not in the first parameter list.

[nicolasstucki]

Test case to add
tests/generic-java-signatures/i3411.scala

object Foo {
  def foo[U](a: Int, b: Double)(c: Boolean, d: String)(e: Object): Int = a
}

object Test {
  def main(args: Array[String]): Unit = {
    val f1 = Foo.getClass.getMethods.find(_.getName.endsWith("foo")).get
    val tParams = f1.getTypeParameters
    println(f1.toGenericString)
    tParams.foreach { tp =>
      println(tp.getName + " <: " + tp.getBounds.map(_.getTypeName).mkString(", "))
    }
  }
}

[nicolasstucki]

// GenericSignatures.scala

        case mtpe: MethodType =>
          // phantom method parameters do not make it to the bytecode.
          val params = mtpe.paramInfos.filterNot(_.isPhantom)
          val restpe = mtpe.resultType
          builder.append('(')
          // TODO: Update once we support varargs
          params.foreach { tp =>
            jsig(tp)
          }
          builder.append(')')
          methodResultSig(restpe)

does not handle the case where restpe is another method type.