Need help !!! SCO 3.2v5.0.6 with gcc 2.95.2 with -g (core dump)

[Fuhrer Jean-Pierre (MMVZJFU)]

If we compile our software with -g (debug option), the program ends with a
core dump. 
We use following OS and compiler: 

SCO OpenServer 3.2v5.0.6 
SCO UNIX Development System Release 5.1.2A 27Jul00 
gcc version 2.95.2 19991024 

Without -g, everything wotks well !!

We saw that if we have following configuration: 

SCO OpenServer 3.2v5.0.6 
SCO UNIX Development System Release 5.0.0a 16Mar95 
gcc version 2.95.2 19991024 

everything works well with or without debug option (-g) 
Why ? What is the difference ? 
Which package is compatible with which package? 

Thanks for your help. 
Regards JP