[Bug 2039308] Re: dpkg-shlibdeps --version or --help broken on mantic

[Steve Langasek]

** Also affects: dpkg (Ubuntu)
   Importance: Undecided
       Status: New

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to dpkg in Ubuntu.
https://bugs.launchpad.net/bugs/2039308

Title:
  dpkg-shlibdeps --version or --help broken on mantic

Status in cloud-images:
  New
Status in dpkg package in Ubuntu:
  New

Bug description:
  After the recent update of ubuntu:rolling to point to mantic we
  noticed that one of our package scripts that relies on checking the
  version of dpkg-shlibdeps failed with the following error message:

  `error: cannot read debian/control: No such file or directory`

  It worked (and still works) on ubuntu:lunar.

  The issue can be reproduced with the following Dockerfile:

  ```
  ARG variant

  FROM ubuntu:${variant}

  RUN apt-get update && apt-get install -y --no-install-recommends dpkg-
  dev

  RUN dpkg-shlibdeps --version
  ```

  And then the following succeeds:
  ```
  docker build --build-arg variant=lunar-20231004 .
  ```
  While the following fails with the above mentioned error:
  ```
  docker build --build-arg variant=mantic-20231011 .
  ```

  Running the mantic version with a perl debugger shows that the following line which is added in the mantic version is the cause:
  ```
  my $control = Dpkg::Control::Info->new();
  ```

  Edit: This behavior was observed for linux/amd64, linux/arm/v7 and
  linux/arm64/v8 images if that is relevant.

To manage notifications about this bug go to:
https://bugs.launchpad.net/cloud-images/+bug/2039308/+subscriptions