=== 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: /raid/testing/castro-gfortran/AMReX/Tools/Plotfile//fcompare.gnu.ex() [0x4c5956]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*) at /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:108

 1: /raid/testing/castro-gfortran/AMReX/Tools/Plotfile//fcompare.gnu.ex() [0x4c68e6]
    amrex::BLBackTrace::handler(int) at /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:55

 2: /raid/testing/castro-gfortran/AMReX/Tools/Plotfile//fcompare.gnu.ex() [0x413462]
    main_main() at /raid/testing/castro-gfortran/AMReX/Tools/Plotfile/fcompare.cpp:181

 3: /raid/testing/castro-gfortran/AMReX/Tools/Plotfile//fcompare.gnu.ex() [0x40db8f]
    main at /raid/testing/castro-gfortran/AMReX/Tools/Plotfile/fcompare.cpp:348

 4: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f3a66ee4413]
    ?? ??:0

 5: /raid/testing/castro-gfortran/AMReX/Tools/Plotfile//fcompare.gnu.ex() [0x40fd5e]
    _start at ??:?