The uvuni_to_utf8_flags() function was deprecated[1] in Perl 5.20 and removed[2] in Perl 5.38. [1] https://github.com/Perl/perl5/commit/378516de21aea9be747038c25876881aaf56e166 [2] https://github.com/Perl/perl5/commit/7008caa915ad99e650acf2aea40612b5e48b7ba2 --- Net-IDN-Encode-2.500/lib/Net/IDN/Punycode.xs.orig +++ Net-IDN-Encode-2.500/lib/Net/IDN/Punycode.xs @@ -253,7 +253,7 @@ if(skip_p < re_p) /* move succeeding chars */ Move(skip_p, skip_p + u8, re_p - skip_p, char); re_p += u8; - uvuni_to_utf8_flags((U8*)skip_p, n, UNICODE_ALLOW_ANY); + uvoffuni_to_utf8_flags((U8*)skip_p, n, UNICODE_ALLOW_ANY); } if(!first) SvUTF8_on(RETVAL); /* UTF-8 chars have been inserted */