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bug#31776: guile-2.2: FTBFS on armhf: FAIL: gc.test: gc: after-gc-hook g
From: |
Göran Weinholt |
Subject: |
bug#31776: guile-2.2: FTBFS on armhf: FAIL: gc.test: gc: after-gc-hook gets called |
Date: |
Mon, 06 Aug 2018 15:20:32 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux) |
Rob Browning <address@hidden> writes:
> Rob Browning <address@hidden> writes:
>
>> Rob Browning <address@hidden> writes:
>>
>>> It looks like gc.test may be failing intermittently in Debian (see below).
>>> Searching around I saw at least one other report of this in the #guile
>>> logs from last year.
>>>
>>> For now, I'm wondering if if would be plausible to mark the test as
>>> unresolved to avoid guile-2.2's removal from Debian testing, or if the
>>> failure is likely to indicate a problem serious enough to warrant that
>>> removal.
>>
>> Just wanted to check back about this. It's caused a build on the buildds
>> to fail again.
>
> As an update, If we don't resolve this, guile-2.2 will be removed from
> Debian testing this weekend.
Hello Rob,
The test fails with 2.2.4+1-1 on amd64 as well:
https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/guile-2.2.html
It's really tricky to get it to fail predictably, but you can even your
odds by testing only asyncs.test and gc.test:
apt-get source guile-2.2
cd guile-2.2-2.2.4+1
dpkg-buildpackage -us -uc
mkdir test-suite/async-tests
cp test-suite/tests/{asyncs,gc}.test test-suite/async-tests/
meta/guile --debug -L $PWD/test-suite --no-auto-compile \
-e main -s $PWD/test-suite/guile-test \
--test-suite $PWD/test-suite/async-tests \
--log-file check-guile-async.log
Try the last command around a dozen times and it'll fail eventually.
I didn't get further with debugging than determining that something
probably goes wrong in the interaction between queue_after_gc_hook(),
scm_i_async_push() and scm_i_async_pop(). Every time there was a
failure, this condition was false (the cdr was set to empty list):
if (scm_is_false (SCM_CDR (after_gc_async_cell)))
{
SCM_SETCDR (after_gc_async_cell, t->pending_asyncs);
t->pending_asyncs = after_gc_async_cell;
}
Regards,
--
Göran Weinholt
Debian developer
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