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Date:      Mon, 19 Aug 2019 13:15:38 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 239966] timer_create(2): undefined and incorrect symbols mentioned as possible value for the evp->sigev_notify field
Message-ID:  <bug-239966-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D239966

            Bug ID: 239966
           Summary: timer_create(2): undefined and incorrect symbols
                    mentioned as possible value for the evp->sigev_notify
                    field
           Product: Documentation
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Manual Pages
          Assignee: bugs@FreeBSD.org
          Reporter: bsdpr@phoe.frmug.org
                CC: doc@FreeBSD.org

In FreeBSD 11.2, the timer_create(2) manpage mentions the SIGEV_SIGNO symbo=
l as
a possible value for the evp->sigev_notify field. This symbol is not define=
d in
any of the base headers. I suppose it should had been written as SIGEV_SIGN=
AL
instead.

Likewise, in the same manpage, SIGEV_THREAD_ID is mentioned for the same st=
ruct
member, however this (defined) symbol refers to kernel threads. I guess that
SIGEV_THREAD should had been used instead.

For reference, please see /usr/include/sys/signal.h and
https://pubs.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_04.htm=
l#tag_02_04_02

It looks like the error arose from a confusion between the acceptable value=
 of
the evp->sigev_signo field and the names of the fields these values refer t=
o,
evp->sigev_signo for the SIGEV_SIGNAL value, and evp->sigev_notify_thread_id
for the SIGEV_THREAD value. Since I'm trying for the first time to use that
syscall I may be wrong.

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