1 files changed, 3 insertions, 0 deletions
diff --git a/proto.h b/proto.h
index f9161bbaad..33e8b826ba 100644
--- a/proto.h
+++ b/proto.h
@@ -327,6 +327,9 @@ PERL_CALLCONV bool	Perl_io_close(pTHX_ IO* io, bool not_implicit);
 PERL_CALLCONV OP*	Perl_invert(pTHX_ OP* cmd);
 PERL_CALLCONV bool	Perl_is_gv_magical(pTHX_ char *name, STRLEN len, U32 flags);
 PERL_CALLCONV I32	Perl_is_lvalue_sub(pTHX);
+PERL_CALLCONV U32	Perl_to_uni_upper_lc(pTHX_ U32 c);
+PERL_CALLCONV U32	Perl_to_uni_title_lc(pTHX_ U32 c);
+PERL_CALLCONV U32	Perl_to_uni_lower_lc(pTHX_ U32 c);
 PERL_CALLCONV bool	Perl_is_uni_alnum(pTHX_ UV c);
 PERL_CALLCONV bool	Perl_is_uni_alnumc(pTHX_ UV c);
 PERL_CALLCONV bool	Perl_is_uni_idfirst(pTHX_ UV c);