I assume that your system is a x86_64-linux... for linux, it seems only 32bit systems are supported, mainly because there is no stack validation code for 64-bit target...
The list of supported targets is in: systems_support_checkpointer For version 3.0.0: systems.pas:342: systems_support_checkpointer = [system_i386_linux,system_powerpc_linux] systems.pas-343- + [system_i386_win32] systems.pas-344- + [system_i386_GO32V2] systems.pas-345- + [system_i386_os2] systems.pas-346- + [system_i386_beos,system_i386_haiku] systems.pas-347- + [system_powerpc_morphos]; Anyhow, this code seems also broken for i386-linux... I just committed two fixes to trunk, it is possible to cycle compiler now with -gc option on both i386 and x86_64 linux. As the fix is not cpu specific, I enabled the -gc option for all linux systems in trunk, but this is untested. So if you are using linux OS, -gc option is probably only usable starting with today's trunk commits. Pierre > -----Message d'origine----- > De : fpc-pascal-boun...@lists.freepascal.org [mailto:fpc-pascal- > boun...@lists.freepascal.org] De la part de Graeme Geldenhuys > Envoyé : mercredi 21 septembre 2016 14:35 > À : fpc-pascal@lists.freepascal.org > Objet : Re: [fpc-pascal] with no if assigned() there are bugs > > On 2016-09-21 13:27, Pierre Free Pascal wrote: > > There is also the -gc option: > > -gc Generate checks for pointers > > Interesting, I didn't know about that option. > > Unfortunately under CentOS 6 Linux I get: > > Fatal: Option "-gc" is not, or not yet, supported on the current target > platform > > > Do you know which platforms support the -gc option? Windows, FreeBSD? > > > Regards, > Graeme > > -- > fpGUI Toolkit - a cross-platform GUI toolkit using Free Pascal > http://fpgui.sourceforge.net/ > > My public PGP key: http://tinyurl.com/graeme-pgp > _______________________________________________ > fpc-pascal maillist - fpc-pascal@lists.freepascal.org > http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal