Bug#951216: poppler-utils: pdfinfo incorrectly reports date metadata under reprotest

[Jeffrey Ratcliffe]

Package: poppler-utils
Version: 0.71.0-6
Severity: normal

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?

Create a PDF with defined date metadata:

convert rose: test.tif && tiff2pdf -o test.pdf -e 20181231120000 test.tif

pdfinfo then correctly reports the metadata:

$ pdfinfo test.pdf
Producer:       libtiff / tiff2pdf - 20191103
CreationDate:   Mon Dec 31 13:00:00 2018 CET

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

>From reprotest, however, the output is incorrect.

   * What was the outcome of this action?

$ reprotest -c 'pdfinfo test.pdf' . "*.deb *.changes"
WARNING:reprotest:The control build runs on 1 CPU by default, give --min-cpus
to increase this.
Producer:       libtiff / tiff2pdf - 20191103
CreationDate:   Mon Dec 31 00:00:00 2018 GMT

   * What outcome did you expect instead?

For GMT, I would have expected:

CreationDate:   Mon Dec 31 12:00:00 2018 GMT

Both the isodates and rawdates option work fine:

$ reprotest -c 'pdfinfo -isodates test.pdf' . "*.deb *.changes"
WARNING:reprotest:The control build runs on 1 CPU by default, give --min-cpus
to increase this.
Producer:       libtiff / tiff2pdf - 20191103
CreationDate:   2018-12-31T12:00:00Z

$ reprotest -c 'pdfinfo -rawdates test.pdf' . "*.deb *.changes"
WARNING:reprotest:The control build runs on 1 CPU by default, give --min-cpus
to increase this.
Producer:       libtiff / tiff2pdf - 20191103
CreationDate:   D:20181231120000

This is a problem for programs that rely on pdfinfo to extract metadata from
PDF files, as they then fail reproducibility testing.



-- System Information:
Debian Release: bullseye/sid
  APT prefers testing-debug
  APT policy: (500, 'testing-debug'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 5.4.0-3-amd64 (SMP w/8 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages poppler-utils depends on:
ii  libc6         2.29-9
ii  libcairo2     1.16.0-4
ii  libfreetype6  2.10.1-2
ii  liblcms2-2    2.9-3+b1
ii  libpoppler82  0.71.0-6
ii  libstdc++6    9.2.1-25

poppler-utils recommends no packages.

poppler-utils suggests no packages.

-- no debconf information