=== 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: ./main3d.gnu.FLOAT.TEST.OMP.ex() [0x4cf7b6]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
/raid/testing/microphysics-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:167:39

 1: ./main3d.gnu.FLOAT.TEST.OMP.ex() [0x4d13dd]