java/7298: Can't call method of outer class from inner constructor

java/7298: Can't call method of outer class from inner constructor

[jmr]

>Number:         7298
>Category:       java
>Synopsis:       Can't call method of outer class from inner constructor
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          rejects-legal
>Submitter-Id:   net
>Arrival-Date:   Fri Jul 12 18:46:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Jesse Rosenstock
>Release:        3.2 20020710 (experimental)
>Organization:
>Environment:
System: Linux churchill 2.4.3-12 #1 Fri Jun 8 15:05:56 EDT 2001 i686 unknown
Architecture: i686

	
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: ./configure --prefix=/home/user/jmr/app/gcc
>Description:
	A method of an outer class cannot be called from the inner class
        constructor before the constructor for the inner class's superclass
        has been called.  The outer class has been constructed, so this
        should be allowed.
>How-To-Repeat:

	X.java:

        public class X {
            Object f() {
                return null;
            }
            class XX {
                XX() {
                    this(f());
                }

                XX(Object o) {
                }
            }
        }

        gcj -v X.java yields:

        Reading specs from /home/user/jmr/app/gcc/lib/gcc-lib/i686-pc-linux-gnu/3.2/specs
        Reading specs from /home/user/jmr/app/gcc/lib/gcc-lib/i686-pc-linux-gnu/3.2/../../../libgcj.spec
        rename spec lib to liborig
        Configured with: ./configure --prefix=/home/user/jmr/app/gcc
        Thread model: single
        gcc version 3.2 20020710 (experimental)
         /home/user/jmr/app/gcc/lib/gcc-lib/i686-pc-linux-gnu/3.2/jc1 X.java -fno-use-divide-subroutine -fuse-boehm-gc -fnon-call-exceptions -fkeep-inline-functions -quiet -dumpbase X.java -g1 -version -o /tmp/ccZQXE2X.s
        GNU Java version 3.2 20020710 (experimental) (i686-pc-linux-gnu)
                compiled by GNU C version 2.96 20000731 (Red Hat Linux 7.1 2.96-85).
        Class path starts here:
            /home/user/jmr/gcj_test/inner2/
            /home/user/jmr/app/gcc/share/java/libgcj-3.2.jar/ (system) (zip)
        X.java: In class `X$XX':
        X.java: In constructor `(X)':
        X.java:7: error: Can't reference `this' before the superclass constructor has been called.
                       this(f());
                            ^
        1 error

        This works with javac.
>Fix:
	This could be worked around by passing a reference to the outer
        class into the constructor.

        public class X {
            Object f() {
                return null;
            }
            class XX {
                XX(X x) {
                    this(x.f());
                }

                XX(Object o) {
                }
            }
        }
>Release-Note:
>Audit-Trail:
>Unformatted:

Re: java/7298: Can't call method of outer class from inner constructor

[Dara Hazeghi]

The following reply was made to PR java/7298; it has been noted by GNATS.

From: Dara Hazeghi <dhazeghi@yahoo.com>
To: gcc-gnats@gcc.gnu.org
Cc:  
Subject: Re: java/7298: Can't call method of outer class from inner constructor
Date: Mon, 12 May 2003 13:20:17 -0700

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit- 
 trail&database=gcc&pr=7298
 
 Hello,
 
 I can confirm that this bug still occurs on gcc 3.2, 3.3 branch and  
 mainline (20030511) on i686-linux.
 
 Dara