URL:
<https://savannah.gnu.org/support/?110354>
Summary: Parallel autotest produces mangled output on Solaris
10
Project: Autoconf
Submitted by: zackw
Submitted on: Sat 31 Oct 2020 03:09:25 PM UTC
Category: None
Priority: 5 - Normal
Severity: 3 - Normal
Status: None
Privacy: Public
Assigned to: None
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Operating System: None
_______________________________________________________
Details:
On Solaris 10, with CONFIG_SHELL=/bin/bash (version 3.2.51(1)-release, I
believe), parallel autotest may produce mangled output, with more than one
test result reported on a single line:
./autotest.at:1451: $CONFIG_SHELL ./micro-suite -j4
stdout:
## -------------------------------------------------------------- ##
## GNU Nonsense 1.0 test suite: suite to test parallel execution. ##
## -------------------------------------------------------------- ##
3: test number 3 ok 2: test number 2
ok 1: test number 1
ok
4: test number 4 ok
5: test number 5 ok
6: test number 6 ok
7: test number 7 ok
8: test number 8 ok
9: test number 9 ok 10: test number 10
ok
11: test number 11 ok
12: test number 12 ok
13: test number 13 ok
14: test number 14 ok 15: test number 15
ok
16: test number 16 ok
## ------------- ##
## Test results. ##
## ------------- ##
All 16 tests were successful.
This causes test #212 to fail, because it's looking for 16 copies of 'ok' each
on their own line:
./autotest.at:1452: grep -c '^.\{53\}ok' stdout
1c1
< 16
---
> 12
I don't know if there's anything we can do about this. It looks like a
classic "two or more processes writing to the same pipe at once with the wrong
amount of buffering" bug and we don't control the code doing the buffering. I
have been tinkering with replacing the parallel test driver with `make -j` but
that's a long way from done and might not actually help.
(Originally reported by Dagobert as part of sr #110320, logs extracted from
file #49873.)
_______________________________________________________
Reply to this item at:
<https://savannah.gnu.org/support/?110354>
_______________________________________________
Message sent via Savannah
https://savannah.gnu.org/
