[Bug c++/16184] New: dynamic_cast seg faults when linking certain libraries

[Bug c++/16184] New: dynamic_cast seg faults when linking certain libraries

[cmorris at novell dot com]

See https://mail.internet2.edu/wws/arc/mace-opensaml-users/2004-06/msg00030.html 

I've narrowed it down to a dynamic cast.  This dynamic cast is in a shared
library.  In my executable I link to the shared library at link time.  I also
link in some additional libraries.  I remove these additional libraries when I
link then the problem goes away.  I put the links back and dynamic cast seg
faults again.

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           Summary: dynamic_cast seg faults when linking certain libraries
           Product: gcc
           Version: 3.3.3
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: cmorris at novell dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16184

[Bug c++/16184] dynamic_cast seg faults when linking certain libraries

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-06-24 21:23 -------
Do you load the shared library with RTDL_GLOBAL?
See PR 4993 for more information.

If this is not the case this is just a dup of that bug and an invalid as the TypeInfo has to be exported.

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           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16184

[Bug c++/16184] dynamic_cast seg faults when linking certain libraries

[cmorris at novell dot com]

------- Additional Comments From cmorris at novell dot com  2004-06-28 20:23 -------
(In reply to comment #1)
> Do you load the shared library with RTDL_GLOBAL?
> See PR 4993 for more information.
> 
> If this is not the case this is just a dup of that bug and an invalid as the
TypeInfo has to be exported.

No linking is done at compile time.  I don't do any library loading manually.  I
narrowed down which library changes the behaviour and looks at which symbols are
exported.  All the symbols exported start with "SAL_" except for one symbol
called "findid" 

Could it be that this findid symbol is replacing something else needed for RTTI?

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16184

[Bug c++/16184] dynamic_cast seg faults when linking certain libraries

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-08-31 05:38 -------
What binutils version are you using?

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16184

[Bug c++/16184] dynamic_cast seg faults when linking certain libraries

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-30 00:46 -------
No feedback in 3 months.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16184