To find the reason for core dumps, create debuggable files!

If 4glc (or fcompile etc) is core dumping, then recompile them to have debugging information included. To do this set the CFLAGS in incl/Makefile-common to have a -g, and recompile the relevant Aubit4GL application.

If a compiled 4GL application is core dumping, then compile that with -g (4glpc -g ... ) so that we have a debuggable 4gl executable. Next, run the core-dumping application through gdb, when it dumps core do a bt in gdb..

4glpc -g hello.4gl

gdb 4glc core

Now type bt inside gdb - that will give you a backtrace (with any luck).