Here's some minimal code to illustrate the problem:
import notmuch2
db = notmuch2.Database()
# this works
msgs = db.messages("date:today")
for msg in msgs:
print(msg.messageid)
# this doesn't segfault, but prints truncated IDs
msgs = [m for m in db.messages("date:today") if m.messageid]
print(len(msgs))
for msg in msgs:
print(msg.messageid)
# this segfaults
msgs = list(db.messages("date:today"))
print(len(msgs))
for msg in msgs:
print(msg.messageid)
Cheers,
Lars
On Sun, 02 Feb 2025 13:03:53 -0700, Lars Kotthoff <li...@larsko.org> wrote:
> > Sounds good. Let us know if there problems.
>
> Actually yes — I'm getting a list of messages with db.messages(...). This
> returns the expected iterator, and I can iterate over the messages, getting
> IDs
> etc. However, when I use list() with the result, I'm getting segmentation
> faults
> when accessing IDs etc. It looks like list() gets only references to the
> objects, but not the actual contents (and the memory associated with them is
> freed when the iterator is exhausted).
>
> The same approach works fine with db.threads(...) (which doesn't seem to be
> in
> the online documentation though).
>
> Am I missing something? Do I need to manually copy the Message objects
> somehow?
>
> Thanks,
>
> Lars
>
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