Re: c++/8847: dynamic_cast segfaults with shared lib

[Markus Hillebrand <himself@markus-hillebrand.de>]

The following reply was made to PR c++/8847; it has been noted by GNATS.

From: Markus Hillebrand <himself@markus-hillebrand.de>
To: gcc-gnats@gcc.gnu.org,
 gcc-prs@gcc.gnu.org,
 hans.utz@informatik.uni-ulm.de,
 gcc-bugs@gcc.gnu.org,
 nobody@gcc.gnu.org
Cc:  
Subject: Re: c++/8847: dynamic_cast segfaults with shared lib
Date: Sat, 18 Jan 2003 01:30:44 +0100

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit- 
 trail&database=gcc&pr=8847
 
 Hi!
 
 Maybe I can provide a hint on that problem ...
 
 Today I had some similiar problems by updating some
 of my libraries and some other sources. I also had a
 segmentation-fault on a dynamic_cast. After reading this
 posting I remembered, that problems can occur, when
 using shared libraries are used without using the -fPIC
 compiler option.
 
 I recompiled the library (omniORB-4.0.0, RedHat 7.3 x-86 Linux,
 with gcc-3.2.1) and my source with this option and the problem
 disappeared. I think this is some nasty thing, that there is no
 (linker) check about that. Maybe someone will provide some more
 comfortable checkings here ...
 
 	With best regards,
 	M. Hillebrand