1 files changed, 1 insertions, 0 deletions
diff --git a/proto.h b/proto.h
index 052346d782..91b7f86d10 100644
--- a/proto.h
+++ b/proto.h
@@ -805,6 +805,7 @@ PERL_CALLCONV void	Perl_unshare_hek(pTHX_ HEK* hek);
 PERL_CALLCONV void	Perl_utilize(pTHX_ int aver, I32 floor, OP* version, OP* id, OP* arg);
 PERL_CALLCONV U8*	Perl_utf16_to_utf8(pTHX_ U8* p, U8 *d, I32 bytelen, I32 *newlen);
 PERL_CALLCONV U8*	Perl_utf16_to_utf8_reversed(pTHX_ U8* p, U8 *d, I32 bytelen, I32 *newlen);
+PERL_CALLCONV STRLEN	Perl_utf8_length(pTHX_ U8* s, U8 *e);
 PERL_CALLCONV I32	Perl_utf8_distance(pTHX_ U8 *a, U8 *b);
 PERL_CALLCONV U8*	Perl_utf8_hop(pTHX_ U8 *s, I32 off);
 PERL_CALLCONV U8*	Perl_utf8_to_bytes(pTHX_ U8 *s, STRLEN *len);