So the sample code from comment #1 was wrong.
## Expected
```
File: base64
H4sICAAAAAAC/0ZpbGUA
c3RyxIAMcBAFAK/2p9MfAAAA
```
```
$ python3 -c "import base64, pathlib;
pathlib.Path('file.gz').write_bytes(base64.b64decode('H4sICAAAAAAC/0ZpbGUA') +
base64.b64decode('c3RyxIAMcBAFAK/2p9MfAAAA'))"
$ hd file.gz
00000000 1f 8b 08 08 00 00 00 00 02 ff 46 69 6c 65 00 73 |..........File.s|
00000010 74 72 c4 80 0c 70 10 05 00 af f6 a7 d3 1f 00 00 |tr...p..........|
00000020 00 |.|
$ gunzip file.gz
$ hd file
00000000 41 42 41 42 41 42 41 42 41 42 41 42 41 42 41 42 |ABABABABABABABAB|
00000010 41 42 41 42 00 00 00 00 00 00 00 00 00 00 5a |ABAB..........Z|
0000001f
```
## Got
```
File: base64
H4sICAAAAAAC/0ZpbGUA
cnTChAxwEA==
BRgAr/an0x8AAAA=
```
```
$ python3 -c "import base64, pathlib;
pathlib.Path('file.gz').write_bytes(base64.b64decode('H4sICAAAAAAC/0ZpbGUA') +
base64.b64decode('cnTChAxwEA==') + base64.b64decode('BRgAr/an0x8AAAA='))"$ hd
file.gz
00000000 1f 8b 08 08 00 00 00 00 02 ff 46 69 6c 65 00 72 |..........File.r|
00000010 74 c2 84 0c 70 10 05 18 00 af f6 a7 d3 1f 00 00 |t...p...........|
00000020 00 |.|
00000021
$ gunzip file.gz
$ hd file
00000000 41 42 41 42 41 42 41 42 41 42 41 42 41 42 41 42 |ABABABABABABABAB|
00000010 41 42 41 42 00 00 00 00 00 00 00 00 00 00 5a |ABAB..........Z|
0000001f
```
The raw data is identical, but the zlib compressed raw data differs! So
the apport autopkgtest is too picky here.
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https://bugs.launchpad.net/bugs/2076269
Title:
invalid base64 encoded gzip data on s390x causes autopkgtest failures
Status in Ubuntu on IBM z Systems:
New
Status in apport package in Ubuntu:
New
Status in python3.12 package in Ubuntu:
New
Bug description:
The following tests all fail with an encoding/decoding issue:
tests/unit/test_problem_report.py::T:test_modify
tests/unit/test_report.py::T::test_report_from_systemd_coredump_storage_journal
tests/integration/test_problem_report::T::test_write_file
Example failure:
564s =================================== FAILURES
===================================
564s ________________________________ T.test_modify
_________________________________
564s
564s self = <tests.unit.test_problem_report.T testMethod=test_modify>
564s
564s def test_modify(self):
564s """reading, modifying fields, and writing back."""
564s report = textwrap.dedent(
564s """\
564s ProblemType: Crash
564s Date: now!
564s Long:
564s xxx
564s .
564s yyy
564s Short: Bar
564s File: base64
564s H4sICAAAAAAC/0ZpbGUA
564s c3RyxIAMcBAFAK/2p9MfAAAA
564s """
564s ).encode()
564s
564s pr = problem_report.ProblemReport()
564s pr.load(io.BytesIO(report))
564s
564s self.assertEqual(pr["Long"], "xxx\n.\nyyy")
564s
564s # write back unmodified
564s out = io.BytesIO()
564s pr.write(out)
564s > self.assertEqual(out.getvalue(), report)
564s E AssertionError: b'Pro[73 chars]e64\n H4sICAAAAAAC/0ZpbGUA\n
cnTChAxwEA==\n BRgAr/an0x8AAAA=\n' != b'Pro[73 chars]e64\n
H4sICAAAAAAC/0ZpbGUA\n c3RyxIAMcBAFAK/2p9MfAAAA\n'
564s
564s tests/unit/test_problem_report.py:509: AssertionError
Autopkgtest noble log:
https://autopkgtest.ubuntu.com/results/autopkgtest-noble/noble/s390x/a/apport/20240807_023039_8850a@/log.gz
oracular log:
https://autopkgtest.ubuntu.com/results/autopkgtest-oracular/oracular/s390x/a/apport/20240805_132135_d3a80@/log.gz
This failure was seen on noble (log above) but also on oracular.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/2076269/+subscriptions
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