Bug#978206: dolfin: FTBFS: MixedLinearVariationalSolver.cpp:240:23: error: variable ‘dolfin::PETScNestMatrix A’ has initializer but incomplete type

[Lucas Nussbaum]

Source: dolfin
Version: 2019.2.0~git20200629.946dbd3+lfs-4
Severity: serious
Justification: FTBFS on amd64
Tags: bullseye sid ftbfs
Usertags: ftbfs-20201226 ftbfs-bullseye

Hi,

During a rebuild of all packages in sid, your package failed to build
on amd64.

Relevant part (hopefully):
> cd "/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/dolfin" && /usr/bin/c++ -DDOLFIN_VERSION=\"2019.2.0.dev0\" -DHAS_CHOLMOD -DHAS_HDF5 -DHAS_MPI -DHAS_UMFPACK -DHAS_ZLIB -DNDEBUG -Ddolfin_EXPORTS -I"/<<PKGBUILDDIR>>" -I"/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu" -isystem /usr/lib/python3/dist-packages/ffc/backends/ufc -isystem /usr/include/eigen3 -isystem /usr/include/hdf5/openmpi -isystem /usr/include/suitesparse -isystem /usr/lib/x86_64-linux-gnu/openmpi/include/openmpi -isystem /usr/lib/x86_64-linux-gnu/openmpi/include -fpermissive -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -O2 -g -DNDEBUG -fPIC -std=c++11 -o CMakeFiles/dolfin.dir/fem/MixedLinearVariationalSolver.cpp.o -c "/<<PKGBUILDDIR>>/dolfin/fem/MixedLinearVariationalSolver.cpp"
> /<<PKGBUILDDIR>>/dolfin/fem/MixedLinearVariationalSolver.cpp: In member function ‘void dolfin::MixedLinearVariationalSolver::solve(dolfin::MixedLinearVariationalSolver::assembled_system_type)’:
> /<<PKGBUILDDIR>>/dolfin/fem/MixedLinearVariationalSolver.cpp:240:23: error: variable ‘dolfin::PETScNestMatrix A’ has initializer but incomplete type
>   240 |   PETScNestMatrix A(As);
>       |                       ^
> /<<PKGBUILDDIR>>/dolfin/fem/MixedLinearVariationalSolver.cpp:281:5: error: ‘PETScLUSolver’ was not declared in this scope
>   281 |     PETScLUSolver solver(comm, solver_type);
>       |     ^~~~~~~~~~~~~
> /<<PKGBUILDDIR>>/dolfin/fem/MixedLinearVariationalSolver.cpp:285:5: error: ‘solver’ was not declared in this scope; did you mean ‘solve’?
>   285 |     solver.set_operator(A);
>       |     ^~~~~~
>       |     solve
> /<<PKGBUILDDIR>>/dolfin/fem/MixedLinearVariationalSolver.cpp:290:5: error: ‘PETScKrylovSolver’ was not declared in this scope
>   290 |     PETScKrylovSolver solver(comm, solver_type, pc_type);
>       |     ^~~~~~~~~~~~~~~~~
> /<<PKGBUILDDIR>>/dolfin/fem/MixedLinearVariationalSolver.cpp:291:5: error: ‘solver’ was not declared in this scope; did you mean ‘solve’?
>   291 |     solver.parameters.update(parameters("krylov_solver"));
>       |     ^~~~~~
>       |     solve
> /<<PKGBUILDDIR>>/dolfin/fem/MixedLinearVariationalSolver.cpp:303:13: error: ‘PETScVector’ was not declared in this scope
>   303 |     as_type<PETScVector>(u)->update_ghost_values();
>       |             ^~~~~~~~~~~
> /<<PKGBUILDDIR>>/dolfin/fem/MixedLinearVariationalSolver.cpp:303:27: error: no matching function for call to ‘as_type<<expression error> >(std::shared_ptr<dolfin::GenericVector>&)’
>   303 |     as_type<PETScVector>(u)->update_ghost_values();
>       |                           ^
> In file included from /<<PKGBUILDDIR>>/dolfin/la/GenericTensor.h:38,
>                  from /<<PKGBUILDDIR>>/dolfin/la/GenericMatrix.h:34,
>                  from /<<PKGBUILDDIR>>/dolfin/fem/MixedLinearVariationalSolver.cpp:27:
> /<<PKGBUILDDIR>>/dolfin/la/LinearAlgebraObject.h:64:8: note: candidate: ‘template<class Y, class X> Y& dolfin::as_type(X&)’
>    64 |     Y& as_type(X& x)
>       |        ^~~~~~~
> /<<PKGBUILDDIR>>/dolfin/la/LinearAlgebraObject.h:64:8: note:   template argument deduction/substitution failed:
> /<<PKGBUILDDIR>>/dolfin/fem/MixedLinearVariationalSolver.cpp:303:27: error: template argument 1 is invalid
>   303 |     as_type<PETScVector>(u)->update_ghost_values();
>       |                           ^
> In file included from /<<PKGBUILDDIR>>/dolfin/la/GenericTensor.h:38,
>                  from /<<PKGBUILDDIR>>/dolfin/la/GenericMatrix.h:34,
>                  from /<<PKGBUILDDIR>>/dolfin/fem/MixedLinearVariationalSolver.cpp:27:
> /<<PKGBUILDDIR>>/dolfin/la/LinearAlgebraObject.h:84:24: note: candidate: ‘template<class Y, class X> std::shared_ptr<_Tp> dolfin::as_type(std::shared_ptr<_Tp>)’
>    84 |     std::shared_ptr<Y> as_type(std::shared_ptr<X> x)
>       |                        ^~~~~~~
> /<<PKGBUILDDIR>>/dolfin/la/LinearAlgebraObject.h:84:24: note:   template argument deduction/substitution failed:
> /<<PKGBUILDDIR>>/dolfin/fem/MixedLinearVariationalSolver.cpp:303:27: error: template argument 1 is invalid
>   303 |     as_type<PETScVector>(u)->update_ghost_values();
>       |                           ^
> make[4]: *** [dolfin/CMakeFiles/dolfin.dir/build.make:618: dolfin/CMakeFiles/dolfin.dir/fem/MixedLinearVariationalSolver.cpp.o] Error 1

The full build log is available from:
   http://qa-logs.debian.net/2020/12/26/dolfin_2019.2.0~git20200629.946dbd3+lfs-4_unstable.log

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

If you reassign this bug to another package, please marking it as 'affects'-ing
this package. See https://www.debian.org/Bugs/server-control#affects

If you fail to reproduce this, please provide a build log and diff it with me
so that we can identify if something relevant changed in the meantime.

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.