[Bug 1972735] Re: "go test archive/zip" fails, gophercolor16x16.png wrong size

[Launchpad Bug Tracker]

** Merge proposal linked:
   https://code.launchpad.net/~sergiodj/ubuntu/+source/golang-1.18/+git/golang-1.18/+merge/422246

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Title:
  "go test archive/zip" fails, gophercolor16x16.png wrong size

Status in golang-1.18 package in Ubuntu:
  New

Bug description:
  Go's test suite shows a problem:

  $ go test archive/zip
  --- FAIL: TestReader (0.06s)
      --- FAIL: TestReader/test.zip (0.00s)
          reader_test.go:675: gophercolor16x16.png: len=785, want 664
      --- FAIL: TestReader/test-trailing-junk.zip (0.00s)
          reader_test.go:675: gophercolor16x16.png: len=785, want 664
  FAIL
  FAIL	archive/zip	26.182s
  FAIL

  The source for the test shows that it is comparing the size of the file 
  /usr/share/go-1.18/src/archive/zip/testdata/gophercolor16x16.png
  to the size of the same file inside the archive test.zip in the same directory:

  $ ls -l /usr/share/go-1.18/src/archive/zip/testdata/gophercolor16x16.png
  -rw-r--r-- 1 root root 664 Apr 13 14:52 /usr/share/go-1.18/src/archive/zip/testdata/gophercolor16x16.png

  
  $ unzip -v /usr/share/go-1.18/src/archive/zip/testdata/test.zip
  ...
       785  Stored      785   0% 2010-09-04 22:52 54d531fe  gophercolor16x16.png

  The same file in the upstream tarball,
  http://archive.ubuntu.com/ubuntu/pool/main/g/golang-1.18/golang-1.18_1.18.1.orig.tar.gz
  has the expected size:

  $ tar -tvf golang-1.18_1.18.1.orig.tar.gz | grep gophercolor
  -rw-r--r-- root/root       785 2022-04-12 08:42 go/src/archive/zip/testdata/gophercolor16x16.png

  The file appears to be installed correctly per dpkg:

  $ grep gophercolor /var/lib/dpkg/info/golang-1.18-src.md5sums
  75631d6d103ce71fe8d58aff2386c4a4  usr/share/go-1.18/src/archive/zip/testdata/gophercolor16x16.png

  $ md5sum /usr/share/go-1.18/src/archive/zip/testdata/gophercolor16x16.png
  75631d6d103ce71fe8d58aff2386c4a4  /usr/share/go-1.18/src/archive/zip/testdata/gophercolor16x16.png

  Where in the packaging pipeline did the file become smaller?

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: golang-1.18-src 1.18.1-1ubuntu1
  ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30
  Uname: Linux 5.15.0-27-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu82
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: ubuntu:GNOME
  Date: Mon May  9 14:29:13 2022
  Dependencies:
   
  InstallationDate: Installed on 2020-10-17 (569 days ago)
  InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: golang-1.18
  UpgradeStatus: Upgraded to jammy on 2022-05-01 (8 days ago)

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