On 25. april. 2008, at 11.56, Paul J Stevens wrote: > int ZBDEBUG=1, i = 0; Just a quick FYI. I noticed that you use this to enable debugging in libzdb in all your example programs. ZBDEBUG is a global value in libzdb and the correct way to enable debugging is simply to do 'ZBDEBUG = 1;' Not to redefine the variable in your own program.