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Subject: |
Intermittent 00-repl-server.test failure in 2.0.13 |
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Date: |
Sat, 29 Oct 2016 12:41:15 -0500 |
I noticed that 00-repl-server.test had failed on some of the debian
buildds like this:
Running 00-initial-env.test
Running 00-repl-server.test
FAIL: 00-repl-server.test: repl-server: simple expression - arguments:
(expected-value "scheme@(repl-server)> $1 = 42\n" actual-value "$1 = 42\n")
After suspecting some kind of race, it turns out that I can reproduce
the failure locally (eventually) like this:
cd test-suite
while GUILE_LOAD_PATH=. \
./guile-test tests/00-initial-env.test tests/00-repl-server.test
do
:
done
I don't know what's causing the trouble yet, but I augmented
read-until-prompt to print every line it reads to stderr, and nothing
appeared amiss there, at least.
Thanks
--
Rob Browning
rlb @defaultvalue.org and @debian.org
GPG as of 2011-07-10 E6A9 DA3C C9FD 1FF8 C676 D2C4 C0F0 39E9 ED1B 597A
GPG as of 2002-11-03 14DD 432F AE39 534D B592 F9A0 25C8 D377 8C7E 73A4
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--- Begin Message ---
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Subject: |
Re: bug#24819: Intermittent 00-repl-server.test failure in 2.0.13 |
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Date: |
Fri, 04 Nov 2016 22:50:11 +0100 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) |
Hello!
Rob Browning <address@hidden> skribis:
> I noticed that 00-repl-server.test had failed on some of the debian
> buildds like this:
>
> Running 00-initial-env.test
> Running 00-repl-server.test
> FAIL: 00-repl-server.test: repl-server: simple expression - arguments:
> (expected-value "scheme@(repl-server)> $1 = 42\n" actual-value "$1 = 42\n")
The reason is that ‘repl-reader’ in boot-9.scm goes like this:
(lambda* (prompt #:optional (reader (fluid-ref current-reader)))
(if (not (char-ready?))
(begin
(display (if (string? prompt) prompt (prompt)))
(set-port-column! (current-output-port) 0)))
(force-output)
(run-hook before-read-hook)
((or reader read) (current-input-port)))
Thus, if there’s already data available on the current input port, it
does not print the prompt.
That situation can arise in 00-repl-server.test if we write “(+ 40 2)”
too quickly.
Fixed in 2fbde7f02adb8c6585e9baf6e293ee49cd23d4c4.
Thanks!
Ludo’.
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