[Bug java/18215] New: GCJ disallows some references to 'this' from an enclosing class

[csm at gnu dot org]

In the constructor of a member class, GCJ does not allow you to do a 'super'
call with an argument that calls an instance method of the enclosing class.

For example, GCJ rejects this perfectly valid class:

--- outer.java ---
public class outer
{
  private String name;

  public outer (String name)
  {
    this.name = name;
  }

  public String getID()
  {
    return name;
  }

  public class inner extends Thread
  {
    public inner()
    {
      super ("thread-" + getID());
    }
  }
}
--- outer.java ---

This is valid because the call to 'getID()' is referencing the 'this' from the
enclosing class. GCJ also rejects 'outer.this.getID()' in this example, so there
does not appear to be a workaround.

GCJ fails with:
outer.java: In class `outer$inner':
outer.java: In constructor `(outer)':
outer.java:19: error: Can't reference `this' before the superclass constructor
has been called.
         super ("thread-" + outer.this.getID());
                                       ^
1 error

Tested on:
gcj (GCC) 3.4.2
gcj (GCC) 4.0.0 20041025 (experimental)

-- 
           Summary: GCJ disallows some references to 'this' from an
                    enclosing class
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: java
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: csm at gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org,java-prs at gcc dot gnu
                    dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18215