[Bug bootstrap/69513] LTO bootstrap fails with bootstrap-profiled during linking gnat1 in stagefeedback

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69513

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
This means the DIE in question was created too late or figured unreachable.

        case dw_val_class_die_ref:
          if (AT_ref_external (a))
...
          else
            {
              gcc_assert (AT_ref (a)->die_offset);
              dw2_asm_output_data (DWARF_OFFSET_SIZE, AT_ref (a)->die_offset,
                                   "%s", name);

both 'die' and AT_ref (a) would be interesting to look at.