Ap |U8* |utf8_hop |U8 *s|I32 off
ApM |U8* |utf8_to_bytes |U8 *s|STRLEN *len
ApM |U8* |bytes_to_utf8 |U8 *s|STRLEN *len
-Ap |UV |utf8_to_uv |U8 *s|I32* retlen|bool checking
+Ap |UV |utf8_to_uv |U8 *s|I32* retlen
+Ap |UV |utf8_to_uv_chk |U8 *s|I32* retlen|bool checking
Ap |U8* |uv_to_utf8 |U8 *d|UV uv
p |void |vivify_defelem |SV* sv
p |void |vivify_ref |SV* sv|U32 to_what