=== 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.OMP.ex() [0x4f9f86]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*) at /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:108

 1: ./Castro2d.gnu.TEST.OMP.ex() [0x4faf3b]
    amrex::BLBackTrace::handler(int) at /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:55

 2: /lib64/libc.so.6(+0x38600) [0x7f9b63170600]
    ?? ??:0

 3: ./Castro2d.gnu.TEST.OMP.ex() [0x5d745d]
    __riemann_module_MOD_riemanncg at /raid/testing/castro-gfortran/Castro//Source/hydro/riemann_nd.F90:643

 4: ./Castro2d.gnu.TEST.OMP.ex() [0x5db71c]
    __riemann_module_MOD_cmpflx at /raid/testing/castro-gfortran/Castro//Source/hydro/riemann_nd.F90:211

 5: ./Castro2d.gnu.TEST.OMP.ex() [0x5db812]
    cmpflx_plus_godunov at /raid/testing/castro-gfortran/Castro//Source/hydro/riemann_nd.F90:117

 6: ./Castro2d.gnu.TEST.OMP.ex() [0x451c8f]
    Castro::construct_mol_hydro_source(double, double, amrex::MultiFab&) [clone ._omp_fn.0] at /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BaseFab.H:382
     (inlined by) Castro::construct_mol_hydro_source(double, double, amrex::MultiFab&) [clone ._omp_fn.0] at /raid/testing/castro-gfortran/Castro//Source/hydro/Castro_mol_hydro.cpp:291

 7: /lib64/libgomp.so.1(GOMP_parallel+0x43) [0x7f9b6334b7b3]
    ?? ??:0

 8: ./Castro2d.gnu.TEST.OMP.ex() [0x45081b]
    Castro::construct_mol_hydro_source(double, double, amrex::MultiFab&) at /raid/testing/castro-gfortran/Castro//Source/hydro/Castro_mol_hydro.cpp:485

 9: ./Castro2d.gnu.TEST.OMP.ex() [0x42e11a]
    Castro::do_advance_mol(double, double, int, int) at /raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_mol.cpp:162

10: ./Castro2d.gnu.TEST.OMP.ex() [0x42a61c]
    Castro::advance(double, double, int, int) at /raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:57

11: ./Castro2d.gnu.TEST.OMP.ex() [0x5392d3]
    amrex::Amr::timeStep(int, double, int, int, double) at /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2110

12: ./Castro2d.gnu.TEST.OMP.ex() [0x52e26d]
    amrex::Amr::coarseTimeStep(double) at /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2437

13: ./Castro2d.gnu.TEST.OMP.ex() [0x414e5a]
    main at /raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:133

14: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f9b6315c413]
    ?? ??:0

15: ./Castro2d.gnu.TEST.OMP.ex() [0x4188fe]
    _start at ??:?