Bug#957639: openmx: ftbfs with GCC-10

[Matthias Klose]

Package: src:openmx
Version: 3.8.5+dfsg1-1
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/openmx_3.8.5+dfsg1-1_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

[...]

  960 |       call mpi_allreduce(xc,vav,1,MPI_DOUBLE_COMPLEX,MPI_SUM,mpi_comm_cols,mpierr)
      |                         1
......
 2516 |    call mpi_allreduce(z, tmp, n, MPI_REAL8, MPI_PROD, mpi_comm_rows, mpierr)
      |                      2   
Error: Type mismatch between actual argument at (1) and actual argument at (2) (COMPLEX(8)/REAL(8)).
elpa1.f90:676:24:

  676 |          call MPI_Bcast(aux_bc,n_aux_bc,MPI_REAL8,np_bc,mpi_comm_cols,mpierr)
      |                        1
......
 3388 |          call MPI_Bcast(tmp1,nb*(nb+1)/2,MPI_DOUBLE_COMPLEX,pcol(n),mpi_comm_cols,mpierr)
      |                        2
Error: Type mismatch between actual argument at (1) and actual argument at (2) (REAL(8)/COMPLEX(8)).
elpa1.f90:717:31:

  717 |                call mpi_reduce(tmp1,tmp2,nstor*(lce-lcs+1),MPI_REAL8,MPI_SUM,np,mpi_comm_rows,mpierr)
      |                               1
......
 1413 |                call mpi_reduce(tmp1,tmp2,nstor*(lce-lcs+1),MPI_DOUBLE_COMPLEX,MPI_SUM,np,mpi_comm_rows,mpierr)
      |                               2
Error: Type mismatch between actual argument at (1) and actual argument at (2) (REAL(8)/COMPLEX(8)).
elpa1.f90:460:24:

  460 |          call MPI_Bcast(hvb,nb,MPI_REAL8,cur_pcol,mpi_comm_cols,mpierr)
      |                        1
......
 3388 |          call MPI_Bcast(tmp1,nb*(nb+1)/2,MPI_DOUBLE_COMPLEX,pcol(n),mpi_comm_cols,mpierr)
      |                        2
Error: Type mismatch between actual argument at (1) and actual argument at (2) (REAL(8)/COMPLEX(8)).
elpa1.f90:217:21:

  217 |       call MPI_Bcast(vr,l_rows+1,MPI_REAL8,pcol(istep),mpi_comm_cols,mpierr)
      |                     1
......
 3388 |          call MPI_Bcast(tmp1,nb*(nb+1)/2,MPI_DOUBLE_COMPLEX,pcol(n),mpi_comm_cols,mpierr)
      |                        2
Error: Type mismatch between actual argument at (1) and actual argument at (2) (REAL(8)/COMPLEX(8)).
elpa1.f90:282:25:

  282 |       call mpi_allreduce(x,vav,1,MPI_REAL8,MPI_SUM,mpi_comm_cols,mpierr)
      |                         1
......
 2516 |    call mpi_allreduce(z, tmp, n, MPI_REAL8, MPI_PROD, mpi_comm_rows, mpierr)
      |                      2   
Error: Rank mismatch between actual argument at (1) and actual argument at (2) (rank-1 and scalar)
elpa1.f90:3634:24:

 3388 |          call MPI_Bcast(tmp1,nb*(nb+1)/2,MPI_DOUBLE_COMPLEX,pcol(n),mpi_comm_cols,mpierr)
      |                        2
......
 3634 |          call MPI_Bcast(aux,nblks_comm*nblk*nvc,MPI_REAL8,ips,comm_s,mpierr)
      |                        1
Error: Type mismatch between actual argument at (1) and actual argument at (2) (REAL(8)/COMPLEX(8)).
elpa1.f90:3730:33:

 1413 |                call mpi_reduce(tmp1,tmp2,nstor*(lce-lcs+1),MPI_DOUBLE_COMPLEX,MPI_SUM,np,mpi_comm_rows,mpierr)
      |                               2  
......
 3730 |          if(k>0) call mpi_reduce(aux1,aux2,k,MPI_REAL8,MPI_SUM,ipt,comm_t,mpierr)
      |                                 1
Error: Type mismatch between actual argument at (1) and actual argument at (2) (REAL(8)/COMPLEX(8)).
make[2]: *** [makefile:900: elpa1.o] Error 1
make[2]: Leaving directory '/<<PKGBUILDDIR>>/source'
dh_auto_build: error: cd source && make -j1 "INSTALL=install --strip-program=true" returned exit code 2
make[1]: *** [debian/rules:20: override_dh_auto_build] Error 25
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:13: build] Error 2
dpkg-buildpackage: error: debian/rules build subprocess returned exit status 2