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. Release: 3.2 20020710 (experimental) 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 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) { } } }
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
Confirmed by Dara.
This is a dup of bug 4695. *** This bug has been marked as a duplicate of 4695 ***