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Date:      Fri, 30 Mar 2018 09:02:43 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-ports-bugs@FreeBSD.org
Subject:   [Bug 227104] sysutils/p5-BSD-Process list method causes segmentation fault
Message-ID:  <bug-227104-13@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D227104

            Bug ID: 227104
           Summary: sysutils/p5-BSD-Process list method causes
                    segmentation fault
           Product: Ports & Packages
           Version: Latest
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: Individual Port(s)
          Assignee: swills@FreeBSD.org
          Reporter: freebsdbugs@myarcher.net
          Assignee: swills@FreeBSD.org
             Flags: maintainer-feedback?(swills@FreeBSD.org)

The list method of BMD::Process causes a segmentation fault.

$ perl -MBSD::Process -e 'print $BSD::Process::VERSION';
0.07
$ freebsd-version
11.1-RELEASE-p8
$ perl -e 'use BSD::Process; my @pid =3D BSD::Process::list;'
Segmentation fault (core dumped)

The perl version is v5.24.3

This also happens if you use the following command which is taken from the =
CPAN
page (http://search.cpan.org/~dland/BSD-Process-0.07/Process.pm)

$ perl -e 'use BSD::Process; my @pid =3D BSD::Process::list; for my $p (@pi=
d) {my
$proc =3D  BSD::Process::info($p); print "$p $proc->{ppid}\n"; }'
Segmentation fault (core dumped)

Extra information:
This error appears to occur because the XS code does not handle multiple
returned values properly and corrupts the stack, specifically the mPUSHi ma=
cro
at line 504 of Process.xs does not appear to extend the stack. If the loop
there is preceded by an EXTEND(SP,nr) the test works. (Diagnosis by others)

--=20
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