=== If no file names and line numbers are shown below, one can run
            addr2line -Cpfie my_exefile my_line_address
    to convert `my_line_address` (e.g., 0x4a6b) into file name and line number.
    Or one can use amrex/Tools/Backtrace/parse_bt.py.

=== 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.TEST.MPI.ex() [0x573041]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:167:39

 1: ./Castro2d.gnu.TEST.MPI.ex() [0x574e89]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:71:8

 2: ./Castro2d.gnu.TEST.MPI.ex() [0x4404ce]
    Castro::subcycle_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:491:25

 3: ./Castro2d.gnu.TEST.MPI.ex() [0x437ceb]
    Castro::advance(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:55:55

 4: ./Castro2d.gnu.TEST.MPI.ex() [0x5baf05]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2112:44

 5: ./Castro2d.gnu.TEST.MPI.ex() [0x5bb13d]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2173:31

 6: ./Castro2d.gnu.TEST.MPI.ex() [0x5bb13d]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2173:31

 7: ./Castro2d.gnu.TEST.MPI.ex() [0x5b0246]
    amrex::Amr::coarseTimeStep(double)
/raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2439:13

 8: ./Castro2d.gnu.TEST.MPI.ex() [0x41e7d2]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:143:33

 9: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f9c838eb413]
    __libc_start_main
??:0

10: ./Castro2d.gnu.TEST.MPI.ex() [0x42388e]
    _start
/raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_ParallelDescriptor.H:48:23