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Id: 116285
Status: new
Priority: 0/
Queue: IO-KQueue

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Owner: Nobody in particular
Requestors: mali [...] dyn.com
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Subject: IO-KQueue: fflags type causing errors
Date: Mon, 18 Jul 2016 12:29:06 -0400
To: bug-IO-KQueue [...] rt.cpan.org
From: Chaudhry Usman Ali <mali [...] dyn.com>
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Hi there, Thank you for writing this module. I would like to report a bug in IO::KQueue. *Information:* *http://search.cpan.org/CPAN/authors/id/M/MS/MSERGEANT/IO-KQueue-0.34.tar.gz <http://search.cpan.org/CPAN/authors/id/M/MS/MSERGEANT/IO-KQueue-0.34.tar.gz>* *IO-KQueue version: 0.34* *Perl version: perl 5, version 20, subversion 3 (v5.20.3)* *Operating System: FreeBSD 10.3-RELEASE-p4 amd64* While testing it against perl 5.20.x, we realized that NOTE_EXIT flag is not working because of a misconfigured flag value in KQUEUE.xs. When you look at the NOTE_EXIT value in /usr/include/sys/event.h, #define NOTE_EXIT 0x80000000 /* process exited */ It is being handled as u_short value for fflags in KQueue.xs void 46 EV_SET(kq, ident, filter, flags, fflags = 0, data = 0, udata = NULL) 47 kqueue_t kq 48 uintptr_t ident 49 short filter 50 u_short flags 51 u_short fflags 52 intptr_t data 53 SV * udata The u_short type is not able to handle the flag. This causes many failures, zombie process generation being one of them. This behaviour was not an issue in early versions of perl as we tested it on perl 5.8.9 as well as perl 5.20.x. This apparently has become an issue now that leads to failures involving EV_SET. The solution in our case is a one line fix to change the flag to unsigned int --- KQueue.xs.orig 2016-07-15 19:52:38.017626000 +0000 +++ KQueue.xs 2016-07-15 19:53:56.167569000 +0000 @@ -48,7 +48,7 @@ uintptr_t ident short filter u_short flags - u_short fflags + unsigned int fflags intptr_t data SV * udata PREINIT: On patching the port, with the above patch, the issue is resolved. https://github.com/freebsd/freebsd-ports/tree/94e30f557b8550477e18f4bda4a23cb2c606c64f/devel/p5-IO-KQueue Can you please advise? Thank you *Mani*


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