I mistakenly added the 'd' flag to the entry for check_utf8_print().
ApMd |U8* |bytes_to_utf8 |NN const U8 *s|NN STRLEN *len
Apd |UV |utf8_to_uvchr |NN const U8 *s|NULLOK STRLEN *retlen
Apd |UV |utf8_to_uvuni |NN const U8 *s|NULLOK STRLEN *retlen
-pMd |bool |check_utf8_print |NN const U8 *s|const STRLEN len
+pM |bool |check_utf8_print |NN const U8 *s|const STRLEN len
#ifdef EBCDIC
Adp |UV |utf8n_to_uvchr |NN const U8 *s|STRLEN curlen|NULLOK STRLEN *retlen|U32 flags