Your message dated Tue, 02 Apr 2019 20:45:39 +0000
with message-id <e1hbqhr-0009at...@fasolo.debian.org>
and subject line Bug#915603: fixed in graphicsmagick 1.4~hg15916-2
has caused the Debian Bug report #915603,
regarding libgraphicsmagick++-q16-12: Requires soname/shlibs bump for C++11 ABI
changes
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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immediately.)
--
915603: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=915603
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: libgraphicsmagick++-q16-12
Version: 1.3.31-1
Severity: important
Important due to RC Policy "Shared library packages must include correct shlibs
files".
There was an ABI change between libgraphicsmagick++-q16-12 versions
1.3.30+hg15796-1~deb9u2 and 1.3.31-1 but the shlibs file was not changed. As a
result, some dependent packages like python3-pgmagick don't get a strict-enough
dependency from dpkg-shlibdeps and can end up in a broken state when built with
the newer library but installed with the older.
Steps to reproduce:
1. Ensure you have the stable repo in your apt sources.
2. Install the older library:
apt install libgraphicsmagick++-q16-12=1.3.30+hg15796-1~deb9u2
3. Install python3-pgmagick from testing/unstable:
apt install python3-pgmagick=0.7.4-1+b2
4. Try to load the library (which has an unconstrained dependency on
libgraphicsmagick++-q16-12):
echo 'import pgmagick' | python3
Observation: failure to load libGraphicsMagick++-Q16.so due to missing symbol:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python3/dist-packages/pgmagick/__init__.py", line
1, in <module>
from pgmagick import _pgmagick
ImportError:
/usr/lib/python3/dist-packages/pgmagick/_pgmagick.cpython-36m-x86_64-linux-gnu.so:
undefined symbol:
_ZNK6Magick5ColorcvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEv
This is because the python3-pgmagick library was built with the newer GM++
library, which declares the same soname/shlibs as the older library, but the
exported symbols differ because of the libstdc++ C++11 ABI change
<https://wiki.debian.org/GCC5#libstdc.2B-.2B-_ABI_transition>.
You can compare the exported symbols from each version of
libgraphicsmagick++-q16-12:
readelf -s -W /usr/lib/libGraphicsMagick++-Q16.so.12 | awk '{
print $8 }' | sort -u
Diffing the symbol lists, you can see some changes related to the C++11 ABI
change:
-_ZNK6Magick5ColorcvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev
+_ZNK6Magick5ColorcvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEv
There are also some other changes not necessarily related to the libstdc++ ABI
change.
So I think the soname should have been incremented in version 1.3.31-1 to
prevent packages getting dependencies that are too weak and allow broken
installations. Incrementing it now and rebuilding all dependent packages would
fix them.
-- System Information:
Debian Release: 9.6
APT prefers stable
APT policy: (990, 'stable'), (500, 'stable-updates'), (500,
'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.18.0-3-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages libgraphicsmagick++-q16-12 depends on:
ii libc6 2.27-8
ii libgcc1 1:8.2.0-10
ii libgomp1 8.2.0-10
ii libgraphicsmagick-q16-3 1.3.30+hg15796-1~deb9u2
ii libstdc++6 8.2.0-10
libgraphicsmagick++-q16-12 recommends no packages.
Versions of packages libgraphicsmagick++-q16-12 suggests:
pn graphicsmagick-dbg <none>
--- End Message ---
--- Begin Message ---
Source: graphicsmagick
Source-Version: 1.4~hg15916-2
We believe that the bug you reported is fixed in the latest version of
graphicsmagick, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to 915...@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Laszlo Boszormenyi (GCS) <g...@debian.org> (supplier of updated graphicsmagick
package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmas...@ftp-master.debian.org)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Format: 1.8
Date: Tue, 02 Apr 2019 18:49:40 +0000
Source: graphicsmagick
Architecture: source
Version: 1.4~hg15916-2
Distribution: unstable
Urgency: medium
Maintainer: Laszlo Boszormenyi (GCS) <g...@debian.org>
Changed-By: Laszlo Boszormenyi (GCS) <g...@debian.org>
Closes: 915603 915606
Changes:
graphicsmagick (1.4~hg15916-2) unstable; urgency=medium
.
* Declare break on python{,3}-pgmagick versions compiled with GCC 7
compiled versions of GraphicsMagick (closes: #915603, #915606).
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