I can compile with FB 1.5 gpre but the applications crash!

I just installed FB 1.5 and was able to access my old db and to recompile
about 35K lines of embedded SQL, including my UDFs. This is on SuSE Linux
9.0.

With minor modifications, I was able to compile Eric Boyajian's
<ericboyajian@...> sample as C with gcc. I added '#include "ibase.h"'
and put the declaration for db_name and sqlString inside EXEC SQL BEGIN
DECLARE SECTION; and EXEC SQL END DECLARE SECTION;

Now my problem: Both your program and test programs build off of my database
crash with a segmentation fault when calling gds__unregister_cleanup(). In
gdb it looks like

$ gdb support
GNU gdb 5.3.92
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This GDB was configured as "i586-suse-linux"...
(gdb) run
Starting program: /home/thad/optixdev/server6/odbfbd/test/support
[New Thread 16384 (LWP 28928)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 16384 (LWP 28928)]
0x40035fa0 in gds__unregister_cleanup ()
from /opt/firebird/lib/libfbclient.so.1
(gdb) bt
#0 0x40035fa0 in gds__unregister_cleanup ()
from /opt/firebird/lib/libfbclient.so.1
#1 0x40050ff9 in INET_set_clients () from /opt/firebird/lib/libfbclient.so.1
#2 0x4006122f in port::disconnect() () from /opt/firebird/lib/
libfbclient.so.1
#3 0x40055084 in REM_detach_database ()
from /opt/firebird/lib/libfbclient.so.1
#4 0x4004183c in isc_detach_database ()
from /opt/firebird/lib/libfbclient.so.1
#5 0x08049058 in main ()
(gdb)