Haven't had time to investigate, but it seems libxul might have issues. Errors show up in all 3 ports (www/firefox-esr, www/mozilla-firefox and mail/thunderbird)
Looks like: > Extracting debug info from lib/thunderbird/libxul.so.34.0 dwz: lib/thunderbird/.debug/libxul.so.34.0.dbg: Couldn't find DIE referenced by DW_AT_abstract_origin I've found a small tool called dwarf-check on github (in go... well) hub$ dwarf-check libxul.so.34.0 error initializing dwarf state examiner: malformed dwarf at offset 450264449: nstack underflow so both info seem to point at a bug in clang/lld Quick&dirty port of dwarf-check attached
dwarf-check.tgz
Description: dwarf-check.tgz
