Bug 519519

Summary: [RHEL5 gcc-c++] Code with virtual inheritance compiled by g++ crash at run-time
Product: Red Hat Enterprise Linux 5 Reporter: Jeff Bastian <jbastian>
Component: gccAssignee: Jakub Jelinek <jakub>
Status: CLOSED ERRATA QA Contact: BaseOS QE <qe-baseos-auto>
Severity: high Docs Contact:
Priority: high    
Version: 5.4CC: mnowak, pmuller
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: 519517 Environment:
Last Closed: 2010-03-30 08:21:24 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:
Attachments:
Description Flags
reproducer program
none
backported patch none

Description Jeff Bastian 2009-08-26 22:10:14 UTC 
+++ This bug was initially created as a clone of Bug #519517 +++

Description of problem:
The attached program when compiled by g++ will crash at runtime.  It runs fine when compiled with Sun Studio CC and AIX xlC on their respective platforms.  This was reported upstream and a patch has been accepted.
  http://gcc.gnu.org/ml/gcc-patches/2009-07/msg00302.html
  http://gcc.gnu.org/viewcvs?revision=149297&view=revision

Please include this patch in the gcc-c++ compilers for RHEL 5.

Version-Release number of selected component (if applicable):
gcc-c++-4.1.2-46.el5

How reproducible:
every time

Steps to Reproduce:
1. g++ dyncast-segfault.cpp
2. ./a.out
  
Actual results:
...
in synchro_slave_base dtor
in my_object dtor
before DCASTing to my_module*
Segmentation fault

Expected results:
no seg fault

Additional info:
Comment 1 Jeff Bastian 2009-08-26 22:17:35 UTC 
Created attachment 358782 [details]
reproducer program
Comment 2 Jeff Bastian 2009-08-26 22:41:37 UTC 
Created attachment 358784 [details]
backported patch

This is a version of the upstream patch backported by Heath Petty for  gcc-c++-4.1.2
Comment 11 errata-xmlrpc 2010-03-30 08:21:24 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 therefore 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-2010-0232.html