Dear maintainer:

During a rebuild of all packages in unstable, this package failed to build.

Below you will find the last part of the build log (probably the most
relevant part, but not necessarily). If required, the full build log
is available here:

https://people.debian.org/~sanvila/build-logs/202608/

About the archive rebuild: The build was made on virtual machines from AWS,
using sbuild and a reduced chroot with only build-essential packages.

If you cannot reproduce the bug please contact me privately, as I
am willing to provide ssh access to a virtual machine where the bug is
fully reproducible.

If this is really a bug in one of the build-depends, please use
reassign and add an affects on src:libcgns, so that this is still
visible in the BTS web page for this package.

Thanks.
--------------------------------------------------------------------------------
[...]
dpkg-gensymbols: error: some symbols or patterns disappeared in the symbols file: see diff output below
dpkg-gensymbols: warning: debian/libcgns4.5/DEBIAN/symbols does not match completely debian/libcgns4.5.symbols
--- debian/libcgns4.5.symbols (libcgns4.5_4.5.0-1_amd64)
+++ dpkg-gensymbolsvnDZ48       2026-08-07 09:57:14.063808532 +0000
@@ -203,7 +203,7 @@
  ZoneTypeName@Base 4.5.0
  __cgns_MOD___copy___iso_c_binding_C_ptr@Base 4.5.0
  __cgns_MOD___def_init___iso_c_binding_C_ptr@Base 4.5.0
- __cgns_MOD___vtab___iso_c_binding_C_ptr@Base 4.5.0
+#MISSING: 4.5.0-1# __cgns_MOD___vtab___iso_c_binding_C_ptr@Base 4.5.0
  __cgns_MOD_angleunitsname@Base 4.5.0
  __cgns_MOD_arbitrarygridmotiontypename@Base 4.5.0
  __cgns_MOD_areatypename@Base 4.5.0
dh_makeshlibs: error: failing due to earlier errors
make: *** [debian/rules:25: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2

Dear maintainer,

I've prepared an NMU for libcgns (versioned as 4.5.0-1.1) and uploaded
it to DELAYED/3. Please feel free to tell me if I should cancel it.

cu
Adrian

We believe that the bug you reported is fixed in the latest version of
libcgns, 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 1143853@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Santiago Vila <sanvila@debian.org> (supplier of updated libcgns 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 ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Tue, 11 Aug 2026 11:25:00 +0200
Source: libcgns
Architecture: source
Version: 4.5.0-2
Distribution: unstable
Urgency: medium
Maintainer: Debian Science Maintainers <debian-science-maintainers@lists.alioth.debian.org>
Changed-By: Santiago Vila <sanvila@debian.org>
Closes: 1143853
Changes:
 libcgns (4.5.0-2) unstable; urgency=medium
 .
   * Team upload.
 .
   [ Adrian Bunk ]
   * Fix FTBFS with GCC 16. Closes: #1143853.
 .
   [ Santiago Vila ]
   * Drop "Rules-Requires-Root: no" (default).
   * Drop "Priority: optional" (default).
   * Update standards-version.
   * Disable redundant/duplicate Salsa CI jobs.
Checksums-Sha1:
 759555a4b456c440c5efa781d2cd428b190fce98 1770 libcgns_4.5.0-2.dsc
 d0c81cef1859cebc830a5a0c6d30e051452b0cde 20284 libcgns_4.5.0-2.debian.tar.xz
 50638979519e824af9a14e960c530a642a4bd853 9908 libcgns_4.5.0-2_source.buildinfo
Checksums-Sha256:
 4c115a88fa6f5ee23703ca17a2e7e78b11f9ec071d7ecb819dc3ca1c731f381c 1770 libcgns_4.5.0-2.dsc
 fcaddc01f813fe9b546c3df9999970743a4b852e8831abea37bc9a19503d5b7c 20284 libcgns_4.5.0-2.debian.tar.xz
 12b36f2ec46f3ab8b8f0d716e45f56a1ff18cb394449f5a458100d0dd0ff0db7 9908 libcgns_4.5.0-2_source.buildinfo
Files:
 0a76d4b0ab9dcb48c91b149af7dd1849 1770 libs optional libcgns_4.5.0-2.dsc
 74f2d51e202a1ba702bef02e504debde 20284 libs optional libcgns_4.5.0-2.debian.tar.xz
 6507a741c5bf2625fa63f7fa175deee5 9908 libs optional libcgns_4.5.0-2_source.buildinfo
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