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

Submitter:  Zack Weinberg <zackw>
Submitted:  Fri 30 Oct 2020 09:40:22 PM UTC
   
 
Priority:  * 5 - Unprioritized Severity:  3 - Normal
Status:  Done Privacy:  Public
Assigned to:  None Open/Closed:  Closed
Operating System:  None
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Sat 31 Oct 2020 02:05:04 PM UTC, comment #2: 

Chet Ramsey says these are harmless (see https://lists.gnu.org/archive/html/bug-autoconf/2020-10/msg00047.html and https://lists.gnu.org/archive/html/bug-autoconf/2020-10/msg00046.html ) so I made the test suite ignore them (commit bf19f95cf4766c8a22583dfdbbbbc67a97c4b6b0.)

Zack Weinberg <zackw>
Group administrator
Fri 30 Oct 2020 09:43:32 PM UTC, comment #1: 

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...

Zack Weinberg <zackw>
Group administrator
Fri 30 Oct 2020 09:40:22 PM UTC, original submission:  

bash 5.1.0(1)-rc1, which is the version of bash in Debian unstable as of 2020-10-15, unpredictably prints strings of the form

TRACE: pid 411364: bgp_delete: deleting 432074

to the process's stderr while executing the "FIFO job dispatcher" that is part of autotest.  This causes several test failures in autoconf's own testsuite.

Zack Weinberg <zackw>
Group administrator

 

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    Date Changed by Updated Field Previous Value => Replaced by
    2020-10-31 zackw StatusNone Done
        Open/ClosedOpen Closed

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