[Bug 1901528] Re: [Ubuntu 20.10] - When zlib acceleration is enabled, gzip fails when given multiple files larger than 5KB (gzip)

[Frank Heimes]

** Also affects: ubuntu-z-systems
   Importance: Undecided
       Status: New

** Changed in: ubuntu-z-systems
   Importance: Undecided => High

** Changed in: ubuntu-z-systems
     Assignee: (unassigned) => Canonical Foundations Team (canonical-foundations)

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Title:
  [Ubuntu 20.10] - When zlib acceleration is enabled, gzip fails when
  given multiple files larger than 5KB (gzip)

Status in Ubuntu on IBM z Systems:
  New
Status in zlib package in Ubuntu:
  New

Bug description:
  When zlib acceleration is enabled, gzip fails when given multiple
  files larger than 5KB.

  This problem does not happen when running gzip against a single file
  at a time. It only happens when you provide multiple files as gzip
  arguments.

  So this works whether zlib acceleration is enabled or not:

  for file in file1 file2; do gzip $file ; done

  But this fails (when zlib acceleration is enabled):

  gzip file1 file2

  The patch to fix this has been accepted upstream:
  https://git.savannah.gnu.org/cgit/gzip.git/commit/?id=be0a534ba2b6e77da289de8da79e70843b1028cc

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