[Bug 1983255] Re: samtools-legacy misses 'Remove compressBound assertions' (PR #1258) fix

[Frank Heimes]

It's a similar situation with the zlib (1:1.2.11.dfsg-2ubuntu1.4)) proposed-migration in focal:
https://people.canonical.com/~ubuntu-archive/proposed-migration/focal/update_excuses.html#zlib

Again focal's version of the samtools-legacy package needed the fix 'PR #1258'.
And based on that, libbio-samtools-perl requires a rebuild since it statically links against libbam-dev.

See PPA: https://launchpad.net/~fheimes/+archive/ubuntu/lp1983255

debdiffs below ...

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https://bugs.launchpad.net/bugs/1983255

Title:
  samtools-legacy misses 'Remove compressBound assertions' (PR #1258)
  fix

Status in samtools-legacy package in Ubuntu:
  In Progress

Bug description:
  samtools-legacy is the source package for libbam-dev,
  which is used by libbio-samtools-perl (autopkgtests),
  that is for example triggered by a zlib update (proposed-transition).

  zlib requires a fix for 'compressBound() returns an incorrect result
  on z15' LP#1961427 that again requires the 'Remove compressBound
  assertions' (PR #1258) fix in all bgzf.c implementations, like htslib,
  bedtools or even samtools-legacy.

  Problematic is that the code differs quite a bit from the one where
  the PR#1258 was designed for and that is used in the htslib or
  bedtools package (no bgzf_hopen - looks a bit out of date), so it does
  not apply cleanly.

  According to upstream 'https://github.com/lh3/samtools-legacy' the project
  is "For testing only." and marked as "DON'T USE!" and it's last update
  is from Nov 9, 2013.

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