=== If no file names and line numbers are shown below, one can run
            addr2line -Cfie my_exefile my_line_address
    to convert `my_line_address` (e.g., 0x4a6b) into file name and line number.

=== Please note that the line number reported by addr2line may not be accurate.
    One can use
            readelf -wl my_exefile | grep my_line_address'
    to find out the offset for that line.

 0: ./Castro1d.gnu.DEBUG.MPI.ex() [0x540054]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
    /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:107

 1: ./Castro1d.gnu.DEBUG.MPI.ex() [0x53fe5d]
    amrex::BLBackTrace::handler(int)
    /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:55

 2: ./Castro1d.gnu.DEBUG.MPI.ex() [0x4a024e]
    amrex::ParallelDescriptor::Abort(int, bool)
    /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_ParallelDescriptor.cpp:225

 3: ./Castro1d.gnu.DEBUG.MPI.ex() [0x462e8c]
    amrex::Assert(char const*, char const*, int, char const*)
    /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX.cpp:278

 4: ./Castro1d.gnu.DEBUG.MPI.ex() [0x51eec0]
    amrex::FabArrayBase::getTileArray(amrex::IntVect const&) const
    /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_FabArrayBase.cpp:1463 (discriminator 3)

 5: ./Castro1d.gnu.DEBUG.MPI.ex() [0x53257d]
    amrex::MFIter::Initialize()
    /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_MFIter.cpp:166

 6: ./Castro1d.gnu.DEBUG.MPI.ex() [0x531cd0]
    amrex::MFIter::MFIter(amrex::FabArrayBase const&, unsigned char)
    /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_MFIter.cpp:24

 7: ./Castro1d.gnu.DEBUG.MPI.ex() [0x5e9d08]
    amrex::MLCellLinOp::MetricFactor::MetricFactor(amrex::BoxArray const&, amrex::DistributionMapping const&, amrex::Geometry const&, bool)
    /raid/testing/castro-gfortran/AMReX//Src/LinearSolvers/MLMG/AMReX_MLCellLinOp.cpp:767 (discriminator 1)

 8: ./Castro1d.gnu.DEBUG.MPI.ex() [0x5e5503]
    amrex::MLCellLinOp::defineAuxData()
    /raid/testing/castro-gfortran/AMReX//Src/LinearSolvers/MLMG/AMReX_MLCellLinOp.cpp:85 (discriminator 2)

 9: ./Castro1d.gnu.DEBUG.MPI.ex() [0x5e4d52]
    amrex::MLCellLinOp::define(amrex::Vector<amrex::Geometry, std::allocator<amrex::Geometry> > const&, amrex::Vector<amrex::BoxArray, std::allocator<amrex::BoxArray> > const&, amrex::Vector<amrex::DistributionMapping, std::allocator<amrex::DistributionMapping> > const&, amrex::LPInfo const&, amrex::Vector<amrex::FabFactory<amrex::FArrayBox> const*, std::allocator<amrex::FabFactory<amrex::FArrayBox> const*> > const&)
    /raid/testing/castro-gfortran/AMReX//Src/LinearSolvers/MLMG/AMReX_MLCellLinOp.cpp:25

10: ./Castro1d.gnu.DEBUG.MPI.ex() [0x5fde70]
    amrex::MLABecLaplacian::define(amrex::Vector<amrex::Geometry, std::allocator<amrex::Geometry> > const&, amrex::Vector<amrex::BoxArray, std::allocator<amrex::BoxArray> > const&, amrex::Vector<amrex::DistributionMapping, std::allocator<amrex::DistributionMapping> > const&, amrex::LPInfo const&, amrex::Vector<amrex::FabFactory<amrex::FArrayBox> const*, std::allocator<amrex::FabFactory<amrex::FArrayBox> const*> > const&)
    /raid/testing/castro-gfortran/AMReX//Src/LinearSolvers/MLMG/AMReX_MLABecLaplacian.cpp:30

11: ./Castro1d.gnu.DEBUG.MPI.ex() [0x5fdda3]
    amrex::MLABecLaplacian::MLABecLaplacian(amrex::Vector<amrex::Geometry, std::allocator<amrex::Geometry> > const&, amrex::Vector<amrex::BoxArray, std::allocator<amrex::BoxArray> > const&, amrex::Vector<amrex::DistributionMapping, std::allocator<amrex::DistributionMapping> > const&, amrex::LPInfo const&, amrex::Vector<amrex::FabFactory<amrex::FArrayBox> const*, std::allocator<amrex::FabFactory<amrex::FArrayBox> const*> > const&)
    /raid/testing/castro-gfortran/AMReX//Src/LinearSolvers/MLMG/AMReX_MLABecLaplacian.cpp:17

12: ./Castro1d.gnu.DEBUG.MPI.ex() [0x45e7dc]
    Diffusion::applyop_mlmg(int, amrex::MultiFab&, amrex::MultiFab&, amrex::MultiFab&, amrex::Vector<std::unique_ptr<amrex::MultiFab, std::default_delete<amrex::MultiFab> >, std::allocator<std::unique_ptr<amrex::MultiFab, std::default_delete<amrex::MultiFab> > > >&)
    /raid/testing/castro-gfortran/Castro//Source/diffusion/Diffusion.cpp:201 (discriminator 5)

13: ./Castro1d.gnu.DEBUG.MPI.ex() [0x45dc84]
    Diffusion::applyop(int, amrex::MultiFab&, amrex::MultiFab&, amrex::MultiFab&, amrex::Vector<std::unique_ptr<amrex::MultiFab, std::default_delete<amrex::MultiFab> >, std::allocator<std::unique_ptr<amrex::MultiFab, std::default_delete<amrex::MultiFab> > > >&)
    /raid/testing/castro-gfortran/Castro//Source/diffusion/Diffusion.cpp:77

14: ./Castro1d.gnu.DEBUG.MPI.ex() [0x457b00]
    Castro::getTempDiffusionTerm(double, amrex::MultiFab&, amrex::MultiFab&)
    /raid/testing/castro-gfortran/Castro//Source/diffusion/Castro_diffusion.cpp:172

15: ./Castro1d.gnu.DEBUG.MPI.ex() [0x456c47]
    Castro::add_temp_diffusion_to_source(amrex::MultiFab&, amrex::MultiFab&, amrex::MultiFab&, double, double)
    /raid/testing/castro-gfortran/Castro//Source/diffusion/Castro_diffusion.cpp:67

16: ./Castro1d.gnu.DEBUG.MPI.ex() [0x4565b7]
    Castro::construct_old_diff_source(amrex::MultiFab&, amrex::MultiFab&, double, double)
    /raid/testing/castro-gfortran/Castro//Source/diffusion/Castro_diffusion.cpp:22

17: ./Castro1d.gnu.DEBUG.MPI.ex() [0x446e20]
    Castro::construct_old_source(int, amrex::MultiFab&, amrex::MultiFab&, double, double, int, int)
    /raid/testing/castro-gfortran/Castro//Source/sources/Castro_sources.cpp:159

18: ./Castro1d.gnu.DEBUG.MPI.ex() [0x446b28]
    Castro::do_old_sources(amrex::MultiFab&, amrex::MultiFab&, double, double, int, int)
    /raid/testing/castro-gfortran/Castro//Source/sources/Castro_sources.cpp:91 (discriminator 2)

19: ./Castro1d.gnu.DEBUG.MPI.ex() [0x423c06]
    Castro::do_advance(double, double, int, int)
    /raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:242

20: ./Castro1d.gnu.DEBUG.MPI.ex() [0x427542]
    Castro::subcycle_advance(double, double, int, int)
    /raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:1242

21: ./Castro1d.gnu.DEBUG.MPI.ex() [0x423878]
    Castro::advance(double, double, int, int)
    /raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:103

22: ./Castro1d.gnu.DEBUG.MPI.ex() [0x568b25]
    amrex::Amr::timeStep(int, double, int, int, double)
    /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:1948

23: ./Castro1d.gnu.DEBUG.MPI.ex() [0x569316]
    amrex::Amr::coarseTimeStep(double)
    /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2162

24: ./Castro1d.gnu.DEBUG.MPI.ex() [0x43ace3]
    main
    /raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:132

25: /lib64/libc.so.6(__libc_start_main+0xea) [0x7fe38d20bf2a]
    ??
    ??:0

26: ./Castro1d.gnu.DEBUG.MPI.ex() [0x409afa]
    _start
    ??:?