A bit of thought, and it becomes clear. Since 0 is a reserved (and always has been) value for DW_AT_decl_file the numbers used by the compiler must start at 1.
So to index into the array of names from the line table header make sure your value is greater than zero and subtract 1 from the DW_AT_decL_file. With DWARF5 the file numbered 1 has to be the file of the compilation unit (same as DW_AT_name of the compilation unit). With earlier DWARF the file numbered is some other file referenced by that compilation unit. Soon dwarfdump -v -v -v will print a full and accurate listing of all the fields in a DWARF5 line table header (right now it hides much of the DWARF5 line table header detail). DavidA. _______________________________________________ Dwarf-Discuss mailing list Dwarf-Discuss@lists.dwarfstd.org http://lists.dwarfstd.org/listinfo.cgi/dwarf-discuss-dwarfstd.org