On Monday, 24 February 2025 at 09:30, Petr Pisar <ppi...@redhat.com> wrote:
> > Has anyone else seen this? Frustratingly I can't reproduce locally.
> Last time we saw and fixed this issue was 4 years ago.

Hmm, it's certainly something in the latest release.

> A reproducer is welcome because the mistake probably happens way far from
> drawing the progressbar.

This morning I tried grabbing the as-built docker container from the github 
container store, and ran it successfully with podman interactively on Fedora 
41. It's certainly something to do with running without a tty, or with a 
"small" tty.

> > I'm guessing it's a regression in dnf5-5.2.10.0-2.fc41 -- i.e. 
> > https://bodhi.fedoraproject.org/updates/FEDORA-2025-665751b0e4
> Yes, there was a lot of changes in the progressbar code between 5.2.8.1 and
> 5.2.9.0 versions.

Frustratingly, it's also impossible to "dnf downgrade dnf5 -y" in CI as it also 
crashes downgrading. A log isn't so useful as it's literally:

terminate called after throwing an instance of 'std::length_error'
  what():  basic_string::_M_replace_aux
Aborted                 (core dumped)

This seems to be that we're trying to create a huuuge string -- i.e. something 
like 
https://github.com/rpm-software-management/dnf5/commit/8974d33bd97396c148181474dd9efc734a05a072
 looks really dodgy with regards to integer underflow.

Richard.

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