=== 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: ./Castro2d.gnu.DEBUG.MPI.ex() [0x5bce06]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
    /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:104

 1: ./Castro2d.gnu.DEBUG.MPI.ex() [0x5bcc59]
    amrex::BLBackTrace::handler(int)
    /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:51

 2: ./Castro2d.gnu.DEBUG.MPI.ex() [0x521515]
    amrex::ParallelDescriptor::Abort(int, bool)
    /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_ParallelDescriptor.cpp:323

 3: ./Castro2d.gnu.DEBUG.MPI.ex() [0x4d5b0f]
    amrex::Assert(char const*, char const*, int, char const*)
    /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX.cpp:244

 4: ./Castro2d.gnu.DEBUG.MPI.ex() [0x44b673]
    Castro::apply_source_to_state(amrex::MultiFab&, amrex::MultiFab&, double)
    /raid/testing/castro-gfortran/Castro//Source/sources/Castro_sources.cpp:15

 5: ./Castro2d.gnu.DEBUG.MPI.ex() [0x424c50]
    Castro::do_advance(double, double, int, int)
    /raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:232

 6: ./Castro2d.gnu.DEBUG.MPI.ex() [0x4248e2]
    Castro::advance(double, double, int, int)
    /raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:104

 7: ./Castro2d.gnu.DEBUG.MPI.ex() [0x5ea32c]
    amrex::Amr::timeStep(int, double, int, int, double)
    /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:1908

 8: ./Castro2d.gnu.DEBUG.MPI.ex() [0x5eab1c]
    amrex::Amr::coarseTimeStep(double)
    /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2019

 9: ./Castro2d.gnu.DEBUG.MPI.ex() [0x440471]
    main
    /raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:132

10: /lib64/libc.so.6(__libc_start_main+0xea) [0x7fee9328388a]
    ??
    ??:0

11: ./Castro2d.gnu.DEBUG.MPI.ex() [0x40ba0a]
    _start
    ??:?