Non idempotent code generated for inner methods

[nicolasstucki]

object Foo {
  def foo[X <: Int](x: X) = {
    def bar = "a"
    bar
  }

  def foo(x: String) = {
    def bar = 2
    bar
  }
}

if we use sbt 'run Foo.scala'; javap -p Foo$ I get:

public final class Foo$ {
  public static final Foo$ MODULE$;
  public static {};
  public Foo$();
  public java.lang.String foo(int);
  public int foo(java.lang.String);
  private java.lang.String bar$1();
  private int bar$2();
}

but if we do dotc Foo.scala; javap -p Foo$ I get:

public final class Foo$ {
  public static final Foo$ MODULE$;
  public static {};
  public Foo$();
  public java.lang.String foo(int);
  public int foo(java.lang.String);
  private java.lang.String bar$2();
  private int bar$1();
}

Note that the names bar$1 and bar$2 are inverted. This is not incorrect but might not be good for the incremental compilation as it can invalidates based on class files that have not really changed.

[nicolasstucki]

This is breaking idempotency tests on bootstrapped compiler.

[nicolasstucki]

See all blacklisted in #2756.