[bug #49014] Zombies in parallel builds with pselect code

[Jörg Sonnenberger]

URL:
  <http://savannah.gnu.org/bugs/?49014>

                 Summary: Zombies in parallel builds with pselect code
                 Project: make
            Submitted by: joerg
            Submitted on: Tue 06 Sep 2016 12:38:41 PM GMT
                Severity: 3 - Normal
              Item Group: Bug
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
       Component Version: 4.2.1
        Operating System: POSIX-Based
           Fixed Release: None
           Triage Status: None

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Details:

When using the new pselect based job server logic, I regularly see hanging
pkgsrc bulk builds on NetBSD 7.0, both i386 and amd64. Most common victims are
huge packages like libreoffice. The symptoms are gmake processes with exactly
one zombie child per concurrent job. Since disable pselect by overriding the
configure test, the problem has disappeared.




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