=== 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: ./Castro3d.gnu.TEST.MPI.ex() [0x4e179a]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
    /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:105

 1: ./Castro3d.gnu.TEST.MPI.ex() [0x4e25d8]
    amrex::BLBackTrace::handler(int)
    /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:51

 2: ./Castro3d.gnu.TEST.MPI.ex() [0x6bcedf]
    ca_set_conserved_indices_
    /raid/testing/castro-gfortran/Castro//Source/driver/set_indices.F90:78

 3: ./Castro3d.gnu.TEST.MPI.ex() [0x6ac0d7]
    ca_set_method_params
    /raid/testing/castro-gfortran/Castro//Source/driver/Castro_nd.F90:436

 4: ./Castro3d.gnu.TEST.MPI.ex() [0x42354f]
    Castro::variableSetUp()
    /raid/testing/castro-gfortran/Castro//Source/driver/Castro_setup.cpp:221

 5: ./Castro3d.gnu.TEST.MPI.ex() [0x508451]
    amrex::Amr::InitAmr()
    /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:229

 6: ./Castro3d.gnu.TEST.MPI.ex() [0x509f47]
    amrex::Amr::Amr()
    /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:202

 7: ./Castro3d.gnu.TEST.MPI.ex() [0x40a190]
    main
    /raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:111 (discriminator 3)

 8: /lib64/libc.so.6(__libc_start_main+0xea) [0x7f9e8572e88a]
    ??
    ??:0

 9: ./Castro3d.gnu.TEST.MPI.ex() [0x410c3a]
    _start
    ??:?