Re: Segmentation Fault

[Jonathan Pryor <jonpryor vt edu>]

In all likelihood, Gnome isn't to blame.  Lots of libraries changed
between Red Hat 7.3 and Red Hat 9, including the support for kernel
threads (migration from LinuxThreads to NPTL, which is more POSIX
compliant).

You should run it in a debugger, and get a full stack trace.  It's
possible that your program is corrupting memory, and the memory
corruption was non-lethal before, but is lethal now.

You might also try running it under valgrind (use Google for more). 
Valgrind can be used to find a variety of memory corruption errors.

 - Jon

On Tue, 2004-03-30 at 13:55, Larry L Lockwood wrote:
> I could use some advice about a problem I am having.
> I am working on a large 'C' program (several thousand lines) which
> uses several very large arrays.  This program has no GUI yet.  The
> development to this point has been on RedHat 7.3 and with the KDE
> environment and that combination works fine.  When I tried to upgrade
> to RedHat 9.0 my program would crash giving me a Segmentation Fault.
> What seems to be the only real difference is that the operating
> environment is now GNOME. The same thing happens on RedHat 7.3 with
> the GNOME environment.  When I follow the thread through with the
> debugger it crashes at a statement  flagT = -9; which isn't much help.
> This whole program of 29 source files compiles and links fine, and
> executes about half way through before it crashes.  Is there something
> that I don't know about that should be included to run in the GNOME
> environment?  I have searched the web for a similar example with no
> success.
> Some tips would be very much appreciated.
> 
> Thanks a bunch
> Larry