PDL::all segfaults under Strawberry perl 5.36 current dev version

[shawnlaffan]

More details in StrawberryPerl/Perl-Dist-Strawberry#93
Link to the perl used is https://github.com/StrawberryPerl/Perl-Dist-Strawberry/releases/tag/dev_20230420

The segfault manifests in the niceslice tests but can be reduced to the all call. I have not tested other utilities.

The issue spans 2.079 to 2.082.

gdb perl
(gdb) set args -Mblib -MPDL -E"my $p = pdl [6,6]; say all $p == 6;"
(gdb) run
Starting program: C:\strawberry\perl\bin\perl.exe -Mblib -MPDL -E"my $p = pdl [6,6]; say all $p == 6;"
[New Thread 25772.0x8778]
[New Thread 25772.0x7d98]
[New Thread 25772.0x65f0]

Thread 1 received signal SIGSEGV, Segmentation fault.
0x00007ff8c880927b in boot_PDL__Core ()
   from C:\STRAWB~2\data\.cpanm\work\1681992025.28280\PDL-2.082\blib\arch\auto\PDL\Core\Core.xs.dll

[mohawk2]

As noted on StrawberryPerl/Perl-Dist-Strawberry#93, I need more information than this, especially a stack-trace and line-number.

And if it's being reported as caused in the boot, are you sure it's even caused by all?

[shawnlaffan]

Will rebuild freeglut PDL and report back.

As for all, that is just where it first manifests in the tests. I would not be surprised that other subs are similarly affected.

[HaraldJoerg]

There is a workaround @mohawk2 and I discussed in IRC:
Compiling one single file Basic/Core/pdlapi.c without optimization gets rid of the SIGSEGV. Of this SIGSEGV, to be precise ;-)

[mohawk2]

Since this isn't a PDL bug per se, can we keep discussion on StrawberryPerl/Perl-Dist-Strawberry#93 ? Also, @shawnlaffan if you agree, you could close this?

[shawnlaffan]

I'll close this so discussion is in one place. We can always re-open if the best option turns out to be patching one file in PDL (and that might be a very large "if").