Hello,

> On Mar 24, 2016, at 12:37, Jim Meyering <jim@meyering.net> wrote:
>  http://meyering.net/gzip/gzip-1.6.56-9190.tar.xz


No test failures on
  CentOS 7 + 6.5,   amd64
  Ubuntu 14.04,   amd64
  Ubuntu 15.04   amd64 + i686
  openSUSE 42.1, 13.1,   amd64
  Fedora 23, 22, 21,   amd64
  Debian 8.1, 7.6,   amd64
  Trisquel 7.0, 6.0.1,   amd64

  Fedora-21, ppc64le
  Fedora-20, ppc64
  Ubuntu-14, aarch64

  OpenBSD 5.8, 5.7, 5.6, amd64
  FreeBSD 10.1, 9.3,   amd64
  GNU Hurd 0.7,   i686
  Debian-7/kFreeBSD-9,  amd64

  AIX-7.1,power7
  OpenSolaris 5.10/5.11 on i86pc and suv4u/sub4v
  Mac OS X 10.11.3, 10.10.5, 10.9.5

On NetBSD 7.0, 6.1.4, One test fails (zgrep-f) perhaps due to filename issues?
log attached.