| Subject: | XS modules hang on croak() called from an exception handler |
| Date: | Sat, 5 Nov 2016 17:47:33 +0100 |
| To: | bug-Perl-Dist-Strawberry [...] rt.cpan.org |
| From: | "bubnikv ." <bubnikv [...] gmail.com> |
Dear Strawberry Perl maintainers.
Some Strawberry builds have a fatal issue with handling croaks from a catch
block of an exception handler in an XS module. A simple C++ construct like
this leads to a perl interpreter hangup.
try {
...
} catch (excepton &e) {
croak("%s\n", e.what());
}
I am certainly not the first to find out:
https://www.nntp.perl.org/group/perl.perl5.porters/2015/01/msg225230.html
The problem makes some features of the Slic3r application unusable. Namely,
if the "croak" is used to relay a return value of some validation, the
application hangs without a warning.
https://github.com/alexrj/Slic3r
https://github.com/prusa3d/Slic3r
strawberry-perl 5.24.0.1 64bit is broken,
strawberry-perl 5.22.1.3 both 32 and 64bit are ok.
Right now I will downgrade the Strawberry perl on our build system and I
will inform our Slic3r users, but it would be great, if it could be fixed,
and maybe a test added to an automatic test suite of the Strawberry Perl
builds.
Thanks for looking into this issue,
Vojtech