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[sr #110351] Parallel autotest broken with bash 5.1.0(1)-rc1

From: Zack Weinberg
Subject: [sr #110351] Parallel autotest broken with bash 5.1.0(1)-rc1
Date: Fri, 30 Oct 2020 17:43:32 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0

Follow-up Comment #1, sr #110351 (project autoconf):

It is unclear to me why and when this happens, and therefore whether it's just
cosmetic, a symptom of a bug in this version of bash, or a symptom of a bug in
the FIFO job dispatcher.  If the latter, it is also unclear to me how serious
the bug is.

My inclination is to apply a big-hammer fix: rip out the FIFO job dispatcher
altogether, and do parallel tests the way Automake does them, i.e. with `make
-j`.  I wouldn't normally suggest this during a beta, but an unreliable test
suite makes it hard to address all the *other* bugs...


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