=== 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: ./Castro1d.gnu.TEST.MPI.ex(+0x1a5775) [0x55c986b26775] amrex::BLBackTrace::print_backtrace_info(_IO_FILE*) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:167:39 1: ./Castro1d.gnu.TEST.MPI.ex(+0x1a75f3) [0x55c986b285f3] amrex::BLBackTrace::handler(int) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:71:8 2: ./Castro1d.gnu.TEST.MPI.ex(+0xadcfd) [0x55c986a2ecfd] Radiation::Radiation(amrex::Amr*, Castro*, int) /raid/testing/castro-gfortran/Castro//Source/radiation/Radiation.cpp:652:23 3: ./Castro1d.gnu.TEST.MPI.ex(+0x32ca1) [0x55c9869b3ca1] Castro::Castro(amrex::Amr&, int, amrex::Geometry const&, amrex::BoxArray const&, amrex::DistributionMapping const&, double) /raid/testing/castro-gfortran/Castro//Source/driver/Castro.cpp:670:12 4: ./Castro1d.gnu.TEST.MPI.ex(+0x5e781) [0x55c9869df781] CastroBld::operator()(amrex::Amr&, int, amrex::Geometry const&, amrex::BoxArray const&, amrex::DistributionMapping const&, double) /raid/testing/castro-gfortran/Castro//Source/driver/CastroBld.cpp:57:1 5: ./Castro1d.gnu.TEST.MPI.ex(+0x1d9845) [0x55c986b5a845] std::enable_if >, std::is_move_constructible, std::is_move_assignable >::value, void>::type std::swap(amrex::AmrLevel*&, amrex::AmrLevel*&) inlined at /usr/include/c++/9/bits/unique_ptr.h:392:6 in amrex::Amr::defBaseLevel(double, amrex::BoxArray const*, amrex::Vector > const*) /usr/include/c++/9/bits/move.h:193:11 std::unique_ptr >::reset(amrex::AmrLevel*) /usr/include/c++/9/bits/unique_ptr.h:392:6 amrex::Amr::defBaseLevel(double, amrex::BoxArray const*, amrex::Vector > const*) /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2851:23 6: ./Castro1d.gnu.TEST.MPI.ex(+0x1e586c) [0x55c986b6686c] amrex::Amr::initialInit(double, double, amrex::BoxArray const*, amrex::Vector > const*) inlined at /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:1209:20 in amrex::Amr::init(double, double) /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:1336:19 amrex::Amr::init(double, double) /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:1209:20 7: ./Castro1d.gnu.TEST.MPI.ex(+0x2492c) [0x55c9869a592c] main /raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:140:33 8: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7fa317ac41a3] __libc_start_main ??:0 9: ./Castro1d.gnu.TEST.MPI.ex(+0x29d5e) [0x55c9869aad5e] _start ??:0