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Bug 167342

Summary: [gcj] Calling virtual method from anon class gets segv
Product: Red Hat Enterprise Linux 4 Reporter: Andrew Cagney <cagney>
Component: gcc4Assignee: Jakub Jelinek <jakub>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: high    
Version: 4.0CC: poelstra
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: RHBA-2006-0127 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-03-07 18:24:52 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 168429, 173278    
Attachments:
Description Flags
Source to Anon none

Description Andrew Cagney 2005-09-01 19:11:52 UTC
1  public abstract class Anon
     2  {
     3      static void staticCallee () {
     4          System.out.println ("staticCallee");
     5      }
     6      void callee () {
     7          System.out.println ("callee");
     8      }
     9      abstract void caller ();
    10      public static void main (String[] argv)
    11      {
    12          Anon a = new Anon () {
    13                  void caller () {
    14                      staticCallee ();
    15                      callee ();
    16                  }
    17              };
    18          a.caller ();
    19      }
    20  }

cagney@localhost$ gcj -g --main=Anon Anon.java
cagney@localhost$ ./a.out
staticCallee
Exception in thread "main" java.lang.NullPointerException
   at Anon$1.caller()
(/home/scratch/frysk/frysk/frysk-imports/tests/anoncall/Anon.java:15)
   at Anon.main(java.lang.String[])
(/home/scratch/frysk/frysk/frysk-imports/tests/anoncall/Anon.java:18)
   at gnu.java.lang.MainThread.call_main() (/usr/lib/libgcj.so.6.0.0)
   at gnu.java.lang.MainThread.run() (/usr/lib/libgcj.so.6.0.0)

cagney@localhost$ ecj Anon.java
cagney@localhost$ gij Anon
staticCallee
callee

rumor has it that this is fixed in CVS head.

Comment 1 Andrew Cagney 2005-09-01 19:13:08 UTC
Created attachment 118364 [details]
Source to Anon

Comment 2 Jakub Jelinek 2005-09-06 15:09:46 UTC
Indeed, it is fixed even in GCC 4.0.x.
Now, is there any customer request or something that would justify changing
GCC 3.4.x Java?  We include GCC 4.0.x Java starting with RHEL4 U2, so if somebody
really needs this, he can use that.  But there are many known Java deficiencies
in GCC 3.4.x Java I guess...

Comment 10 Jakub Jelinek 2005-11-30 18:45:36 UTC
gcc4-4.0.2-9.EL4 built in dist-4E-qu-candidate.

Comment 14 Red Hat Bugzilla 2006-03-07 18:24:52 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2006-0127.html