Bug#893057: python3-notmuch: random aborts on exit

[Brian May]

David Bremner  writes:

> For what it's worth, I can't replicate that with the given script (I ran
> it 1000 times without any aborts).

I am not surprised, initially it worked fine for me too. No idea what
changed.

I ended up changing my script to use Python2.

>> Curiously, changes to tags don't seem to be preserved after the program
>> exits. This may or may not be related.
>
> Do you mean in the case that it aborts, or when it exits normally?

Only when my script aborts after completion.
-- 
Brian May 

Bug#893057: python3-notmuch: random aborts on exit

[David Bremner]

Brian May  writes:

> On 2018-03-16 11:28, David Bremner wrote:
>
>> I suspect it has to do with changes in memory management in python3.
>> 
>> You hide the problem by adding
>> 
>> del(db)
>> 
>> at the end of your script.
>
> Unfortunately, I still seem to be getting this abort error, although not
> as often. 

For what it's worth, I can't replicate that with the given script (I ran
it 1000 times without any aborts).

> Curiously, changes to tags don't seem to be preserved after the program
> exits. This may or may not be related.

Do you mean in the case that it aborts, or when it exits normally?

Bug#893057: python3-notmuch: random aborts on exit

[Brian May]

On 2018-03-16 11:28, David Bremner wrote:

> I suspect it has to do with changes in memory management in python3.
> 
> You hide the problem by adding
> 
> del(db)
> 
> at the end of your script.

Unfortunately, I still seem to be getting this abort error, although not
as often. 

Curiously, changes to tags don't seem to be preserved after the program
exits. This may or may not be related.

Bug#893057: python3-notmuch: random aborts on exit

[Brian May]

David Bremner  writes:

> You hide the problem by adding
>
> del(db)
>
> at the end of your script.
>
> You can read some discussion at
>
> https://notmuchmail.org/pipermail/notmuch/2016/021622.html

Thanks for this, and the work around.

The workaround works fine.
-- 
Brian May 

Bug#893057: python3-notmuch: random aborts on exit

[David Bremner]

Brian May  writes:
> === cut ===
>
> I get the following output:
>
> brian@wspdigital:~$ /usr/bin/python3 ./tagmail
> Aborted
>
> If I comment/remove any of the lines out (including the function that isn't
> even referenced anywhere) or switch to Python2, then it works without any
> problems.
>
> Am wondering if this is a Python3 bug.

I suspect it has to do with changes in memory management in python3.

You hide the problem by adding

del(db)

at the end of your script.

You can read some discussion at

https://notmuchmail.org/pipermail/notmuch/2016/021622.html

Bug#893057: python3-notmuch: random aborts on exit

[Jameson Graef Rollins]

On Fri, Mar 16 2018, Brian May  wrote:
> If I try to run the following program on Debian Stretch:
>
> === cut ===
> #!/usr/bin/python3
> import notmuch
> db = notmuch.Database(mode=notmuch.Database.MODE.READ_WRITE)
>
> def abcdef():
> pass
>
> q_new = notmuch.Query(db, 'tag:new')
> === cut ===
>
> I get the following output:
>
> brian@wspdigital:~$ /usr/bin/python3 ./tagmail
> Aborted
>
> If I comment/remove any of the lines out (including the function that isn't
> even referenced anywhere) or switch to Python2, then it works without any
> problems.
>
> Am wondering if this is a Python3 bug.

This is certainly very weird.  I am able to reproduce.  If I change the
script to this, though, it works fine:

  #!/usr/bin/python3
  import notmuch
  db = notmuch.Database(mode=notmuch.Database.MODE.READ_WRITE)
  q_new = notmuch.Query(db, 'tag:new')

Something about the function definition in there causes this??


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Bug#893057: python3-notmuch: random aborts on exit

[Brian May]

Package: python3-notmuch
Version: 0.23.7-3
Severity: important

If I try to run the following program on Debian Stretch:

=== cut ===
#!/usr/bin/python3
import notmuch
db = notmuch.Database(mode=notmuch.Database.MODE.READ_WRITE)

def abcdef():
pass

q_new = notmuch.Query(db, 'tag:new')
=== cut ===

I get the following output:

brian@wspdigital:~$ /usr/bin/python3 ./tagmail
Aborted

If I comment/remove any of the lines out (including the function that isn't
even referenced anywhere) or switch to Python2, then it works without any
problems.

Am wondering if this is a Python3 bug.

-- System Information:
Debian Release: 9.4
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.14.0-0.bpo.3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), 
LANGUAGE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages python3-notmuch depends on:
ii  libnotmuch4  0.23.7-3
ii  python3  3.5.3-1

python3-notmuch recommends no packages.

python3-notmuch suggests no packages.

-- no debconf information