#1096638 flexpart: ftbfs with GCC-15

#1096638#5
Date:
2025-02-17 17:13:35 UTC
From:
To:
[This bug is NOT targeted to the upcoming trixie release]

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-15/g++-15, but succeeds to build with gcc-14/g++-14. The
severity of this report will be raised before the forky release.

The full build log can be found at:
http://qa-logs.debian.net/2025/02/16/amd64exp/flexpart_9.02-26_unstable_gccexp.log.gz
The last lines of the build log are at the end of this report.

To build with GCC 15, either set CC=gcc-15 CXX=g++-15 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t=experimental install g++

GCC 15 now defaults to the C23/C++23 standards, exposing many FTBFS.
Other 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-15/porting_to.html

[...]
      |                      2
  209 |     do jy=0,nyn(inest)-1
  210 |       do ix=0,nxn(inest)-1
      |                  1
Warning: Array reference at (1) out of bounds (1 > 0) in loop beginning at (2)
FLEXPART.f90:211:25:

  208 |   do inest=1,numbnests
      |                      2
......
  211 |         cbasefluxn(ix,jy,inest)=0.
      |                         1
Warning: Array reference at (1) out of bounds (1 > 0) in loop beginning at (2)
FLEXPART.f90:211:22:

  209 |     do jy=0,nyn(inest)-1
      |                        2
  210 |       do ix=0,nxn(inest)-1
  211 |         cbasefluxn(ix,jy,inest)=0.
      |                      1
Warning: Array reference at (1) out of bounds (0 > -1) in loop beginning at (2)
FLEXPART.f90:211:19:

  210 |       do ix=0,nxn(inest)-1
      |                          2
  211 |         cbasefluxn(ix,jy,inest)=0.
      |                   1
Warning: Array reference at (1) out of bounds (0 > -1) in loop beginning at (2)
gfortran -c -O2 -I/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15  -mcmodel=medium  -O2 -fdefault-real-8 -fconvert=little-endian -frecord-marker=4 -I/usr/include readlanduse.f90
f951: Warning: Nonexistent include directory '/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15' [-Wmissing-include-dirs]
gfortran -c -O2 -I/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15  -mcmodel=medium  -O2 -fdefault-real-8 -fconvert=little-endian -frecord-marker=4 -I/usr/include getfields.f90
f951: Warning: Nonexistent include directory '/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15' [-Wmissing-include-dirs]
gfortran -c -O2 -I/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15  -mcmodel=medium  -O2 -fdefault-real-8 -fconvert=little-endian -frecord-marker=4 -I/usr/include init_domainfill.f90
f951: Warning: Nonexistent include directory '/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15' [-Wmissing-include-dirs]
gfortran -c -O2 -I/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15  -mcmodel=medium  -O2 -fdefault-real-8 -fconvert=little-endian -frecord-marker=4 -I/usr/include interpol_wind.f90
f951: Warning: Nonexistent include directory '/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15' [-Wmissing-include-dirs]
gfortran -c -O2 -I/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15  -mcmodel=medium  -O2 -fdefault-real-8 -fconvert=little-endian -frecord-marker=4 -I/usr/include readoutgrid.f90
f951: Warning: Nonexistent include directory '/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15' [-Wmissing-include-dirs]
gfortran -c -O2 -I/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15  -mcmodel=medium  -O2 -fdefault-real-8 -fconvert=little-endian -frecord-marker=4 -I/usr/include interpol_all.f90
f951: Warning: Nonexistent include directory '/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15' [-Wmissing-include-dirs]
gfortran -c -O2 -I/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15  -mcmodel=medium  -O2 -fdefault-real-8 -fconvert=little-endian -frecord-marker=4 -I/usr/include readpaths.f90
f951: Warning: Nonexistent include directory '/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15' [-Wmissing-include-dirs]
gfortran -c -O2 -I/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15  -mcmodel=medium  -O2 -fdefault-real-8 -fconvert=little-endian -frecord-marker=4 -I/usr/include getrb.f90
f951: Warning: Nonexistent include directory '/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15' [-Wmissing-include-dirs]
gfortran -c -O2 -I/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15  -mcmodel=medium  -O2 -fdefault-real-8 -fconvert=little-endian -frecord-marker=4 -I/usr/include readreceptors.f90
f951: Warning: Nonexistent include directory '/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15' [-Wmissing-include-dirs]
gfortran -c -O2 -I/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15  -mcmodel=medium  -O2 -fdefault-real-8 -fconvert=little-endian -frecord-marker=4 -I/usr/include getrc.f90
f951: Warning: Nonexistent include directory '/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15' [-Wmissing-include-dirs]
gfortran -c -O2 -I/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15  -mcmodel=medium  -O2 -fdefault-real-8 -fconvert=little-endian -frecord-marker=4 -I/usr/include readreleases.f90
f951: Warning: Nonexistent include directory '/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15' [-Wmissing-include-dirs]
gfortran -c -O2 -I/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15  -mcmodel=medium  -O2 -fdefault-real-8 -fconvert=little-endian -frecord-marker=4 -I/usr/include getvdep.f90
f951: Warning: Nonexistent include directory '/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15' [-Wmissing-include-dirs]
gfortran -c -O2 -I/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15  -mcmodel=medium  -O2 -fdefault-real-8 -fconvert=little-endian -frecord-marker=4 -I/usr/include readspecies.f90
f951: Warning: Nonexistent include directory '/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15' [-Wmissing-include-dirs]
gfortran -c -O2 -I/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15  -mcmodel=medium  -O2 -fdefault-real-8 -fconvert=little-endian -frecord-marker=4 -I/usr/include interpol_misslev.f90
f951: Warning: Nonexistent include directory '/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15' [-Wmissing-include-dirs]
gfortran -c -O2 -I/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15  -mcmodel=medium  -O2 -fdefault-real-8 -fconvert=little-endian -frecord-marker=4 -I/usr/include readwind_gfs.f90
f951: Warning: Nonexistent include directory '/usr/lib/x86_64-linux-gnu/fortran/x86_64-linux-gnu-gfortran-15' [-Wmissing-include-dirs]
readwind_gfs.f90:63:7:

   63 |   use grib_api
      |       1
Fatal Error: Cannot open module file 'grib_api.mod' for reading at (1): No such file or directory
compilation terminated.
make[2]: *** [makefile.gfs_gfortran:86: readwind_gfs.o] Error 1
make[2]: Leaving directory '/build/reproducible-path/flexpart-9.02'
make[1]: *** [debian/rules:31: override_dh_auto_build] Error 2
make[1]: Leaving directory '/build/reproducible-path/flexpart-9.02'
make: *** [debian/rules:28: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2