15.031004
2cop_fetch_label                # U (Perl_cop_fetch_label)
3cop_store_label                # U (Perl_cop_store_label)
4sv_2pvbyte_flags               # U
5sv_2pvutf8_flags               # U
6sv_nolocking                   # U (Perl_sv_nolocking)
7SvPVbyte_nomg                  # U
8SvPVbyte_or_null               # U
9SvPVbyte_or_null_nomg          # U
10SvPVutf8_nomg                  # U
11SvPVutf8_or_null               # U
12SvPVutf8_or_null_nomg          # U
13sv_utf8_downgrade_flags        # U
14sv_utf8_downgrade_nomg         # U
15