On Sat, 30 Nov 2002, Martin G C Davies wrote:

Hi,

Testing gpc-20021111 I have hit a problem trying to remove duplicate variables. I've produced a cut-down example and the two sources are:-

mgcd_module.pas

module mgcd_module interface; export mgcd_module = all; var statfile : text; end. module mgcd_module implementation; end.

mgcd_program.pas

program mgcd_program; import mgcd_module; #if __GPC_RELEASE__ < 20021111 var statfile : text; #endif begin rewrite(statfile, 'mgcd.statfile'); writeln(statfile, 'some stats'); end.

I build and run with the command sequence:-

gpc -c mgcd_module.pas gpc -c mgcd_program.pas gpc mgcd_program.o mgcd_module.o a.out

and I get a core dump with gpc-20021111. I used to get a core dump with earlier versions until I used the kludge of the duplicate variable - but this is now illegal. The underlying problem appears to be something to do with file data structures not being initialized.

Adding -g0 to the compile stmts gets rid of the dump and you should get:

a.out: `Unbind' applied to non-bindable TFDD file `(null)' (error #404 at 8049c14)

Hopes this helps, Russ