To get rid of the error message, you could try: export MALLOC_CHECK_=0 # Used for perl/Wx when glibc gives an error
On Sun, 2008-09-21 at 22:09 +0200, Mattia Barbon wrote: > Art Sackett wrote: > > Greetings: > > > > I've got a very interesting problem here. First a little background: > > > > The application of course uses wxperl. Its function is to read in an > > Excel spreadsheet using Spreadsheet::Read and generate various reports > > using PDF::API2. Because the PDF generation takes quite a long time I > > use IPC::Run to fork off a subroutine that instantiates the various > > report generation modules which all share a common PDF::API2 object, > > thus returning control back to wxperl to avoid freezing the GUI. Within > > my derived Wx module, I start a Wx::Timer with a callback to a sub that > > keeps track of document generation progress and provides visual feedback > > to the user. > > > > This all works perfectly under Debian lenny/AMD64 and Ubuntu/i386 here > > in my office. It also works perfectly on my client's workstation if run > > via SSH with X forwarded, but when they run it locally or when I run it > > via vncviewer so the entire Gnome desktop environment is involved, an > > error is thrown when the forked subroutine exits: > > Is it reported by the parent or by the child? > > > *** glibc detected *** perl: free(): invalid pointer <some memory > > address> *** > > > > I have to admit that I'm just assuming that wxperl is involved, since > > the key ingredient is the Gnome desktop environment without which > > everything works as intended. > > You could try to use valgrind; it should at least show you if > the memory has been allocated by wxPerl or by something else. > > > I'm presently unable to confirm which version of wxperl is involved on > > the remote host with the problems as it's offline, but I'm guessing it'd > > be 0.81 as it was installed in February 2008. I know it's in Perl 5.8.8 > > on the remote host. The working versions here are Perl 5.10.0 with Wx > > version 0.84 (Debian lenny AMD64) and Perl 5.8.8 with Wx version 0.82 > > (Ubuntu i386). > > Regards, > Mattia
