#376 PDL Segmentation fault working with Storable restored PDL

[Matthew McGillis]

Running the attached code generates a Segmentation fault.

$ ./test.pl
OS: Linux new 3.10.0-123.9.3.el7.x86_64 #1 SMP Thu Oct 30 00:16:40 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux
Perl: v5.16.3
PDL: 2.007
Storable: 2.45

Segmentation fault

[Chris Marshall]

It looks like the portability issues with Storable have been addressed
since PDL-2.007.
On Mar 16, 2015 1:41 PM, "Matthew McGillis" mmcgillis@users.sf.net wrote:

---

• [bugs:#376] http://sourceforge.net/p/pdl/bugs/376 PDL Segmentation
  fault working with Storable restored PDL*

Status: open
Group: critical
Created: Mon Mar 16, 2015 08:41 PM UTC by Matthew McGillis
Last Updated: Mon Mar 16, 2015 08:41 PM UTC
Owner: nobody

Running the attached code generates a Segmentation fault.

$ ./test.pl
OS: Linux new 3.10.0-123.9.3.el7.x86_64 #1 SMP Thu Oct 30 00:16:40 EDT
2014 x86_64 x86_64 x86_64 GNU/Linux
Perl: v5.16.3
PDL: 2.007
Storable: 2.45

Segmentation fault

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[Matthew McGillis]

Not exactly sure what you mean but this is my results with 2.007_12 which I just down loaded and built.

$ ./test.pl
OS: Linux new 3.10.0-123.9.3.el7.x86_64 #1 SMP Thu Oct 30 00:16:40 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux
Perl: v5.16.3
PDL: 2.007_12
Storable: 2.45

Segmentation fault

[Chris Marshall]

It appears your test.pl is broken as far as PDL goes. See PDL::IO::Storable documentation but, basically, you left out 'use PDL::IO::Storable;' which makes things work for me.

[Matthew McGillis]

Thanks for the pointer that does address the issue for me as well.

Not sure how easy it is but adding something into the code to generate a warning or error about not having PDL::IO::Storable would be a lot friendlier than a Segmentation fault.

[Chris Marshall]

Good idea. I'll keep this ticket open as a reminder.

[Chris Marshall]

I don't think this is an easy fix and don't think it will make PDL-2.014. One possibility would be to add PDL::IO::Storable to use PDL. Another might be to implement stub interface hooks for PDL that issue the warning if PDL::IO::Storable was not use-d. Seems like we might as well to option one in that case. Thoughts?

[Chris Marshall]

PDL::IO::Storable is now loaded when "use PDL;"
This isn't a perfect solution but does avoid mysterious SEGFAULT for many users.
Fixed in git master to appear in next CPAN release.

[Chris Marshall]

With the comint PDL-2.014 release, PDL::IO::Storable will be loaded as part of "use PDL;" which should avoid the SEGFAULT for most cases.