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

From: Paul D. Smith
Subject: [bug #49014] Zombies in parallel builds with pselect code
Date: Sun, 4 Jun 2017 19:12:56 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:53.0) Gecko/20100101 Firefox/53.0

Follow-up Comment #12, bug #49014 (project make):

A fix for bug #51159 has been pushed to the Git repository.

I have a strong suspicion that this is the same problem we're seeing here and
that fix will also fix this issue.

Knowing the problem I thought I might be able to conjure a scenario to force a
repro case for this bug on my system, and indeed I could easily construct
scenarios where the read token was stolen, but I failed to reproduce this bug
(make always made progress eventually and completed; there were no outstanding
zombies) so I can't be sure.

However, if people who do see this can apply the change in Git SHA
b552b0525198 to their versions and retry with pselect() enabled I would
appreciate it.


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