[Debian-med-packaging] Bug#957911: vg: ftbfs with GCC-10

[Matthias Klose]

Package: src:vg
Version: 1.21.0+ds2-3
Severity: normal
Tags: sid bullseye
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-10

Please keep this issue open in the bug tracker for the package it
was filed for.  If a fix in another package is required, please
file a bug for the other package (or clone), and add a block in this
package. Please keep the issue open until the package can be built in
a follow-up test rebuild.

The package fails to build in a test rebuild on at least amd64 with
gcc-10/g++-10, but succeeds to build with gcc-9/g++-9. The
severity of this report will be raised before the bullseye release,
so nothing has to be done for the buster release.

The full build log can be found at:
http://people.debian.org/~doko/logs/gcc10-20200225/vg_1.21.0+ds2-3_unstable_gcc10.log
The last lines of the build log are at the end of this report.

To build with GCC 10, either set CC=gcc-10 CXX=g++-10 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t=experimental install g++ 

Common build failures are new warnings resulting in build failures with
-Werror turned on, or new/dropped symbols in Debian symbols files.
For other C/C++ related build failures see the porting guide at
http://gcc.gnu.org/gcc-10/porting_to.html

[...]
I: Finished running '/tmp/gcc10'.

Finished processing commands.
--------------------------------------------------------------------------------
I: NOTICE: Log filtering will replace 'build/vg-YdVmy1/resolver-u6Gvwt' with '<<RESOLVERDIR>>'

+------------------------------------------------------------------------------+
| Update chroot                                                                |
+------------------------------------------------------------------------------+

Hit:1 http://127.0.0.1:12990/debian sid InRelease
Ign:2 http://127.0.0.1:12990/doko-gcc10 ./ InRelease
Ign:3 http://127.0.0.1:12990/doko-gcc10 ./ Release
Ign:4 http://127.0.0.1:12990/doko-gcc10 ./ Packages
Ign:4 http://127.0.0.1:12990/doko-gcc10 ./ Packages
Ign:4 http://127.0.0.1:12990/doko-gcc10 ./ Packages
Hit:4 http://127.0.0.1:12990/doko-gcc10 ./ Packages
Reading package lists...
Reading package lists...
Building dependency tree...
Reading state information...
Calculating upgrade...
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

+------------------------------------------------------------------------------+
| Fetch source files                                                           |
+------------------------------------------------------------------------------+


Check APT
---------

Checking available source versions...
E: apt-cache returned no information about vg source
E: Are there any deb-src lines in your /etc/apt/sources.list?

+------------------------------------------------------------------------------+
| Cleanup                                                                      |
+------------------------------------------------------------------------------+

Purging /build/vg-YdVmy1
Not cleaning session: cloned chroot in use
E: Failed to fetch source files

+------------------------------------------------------------------------------+
| Summary                                                                      |
+------------------------------------------------------------------------------+

Build Architecture: amd64
Build Type: binary
Build-Space: n/a
Build-Time: 0
Distribution: unstable
Fail-Stage: fetch-src
Host Architecture: amd64
Install-Time: 0
Job: vg_1.21.0+ds2-3
Machine Architecture: amd64
Package: vg
Package-Time: 0
Source-Version: 1.21.0+ds2-3
Space: n/a
Status: given-back
Version: 1.21.0+ds2-3
--------------------------------------------------------------------------------
Finished at 2020-02-26T11:44:48Z
Build needed 00:00:00, no disk space
E: Failed to fetch source files
DC-Status: Failed 30.13938234s
DC-Time-Estimation: 30.13938234 versus expected 1 (r/m: 29.13938234 ; m: 1.0)