-#define utf8_mg_pos(a,b,c,d,e,f,g,h,i) S_utf8_mg_pos(aTHX_ a,b,c,d,e,f,g,h,i)
-#define utf8_mg_pos_init(a,b,c,d,e,f,g) S_utf8_mg_pos_init(aTHX_ a,b,c,d,e,f,g)
+#define sv_pos_u2b_forwards(a,b,c) S_sv_pos_u2b_forwards(aTHX_ a,b,c)
+#define sv_pos_u2b_midway(a,b,c,d) S_sv_pos_u2b_midway(aTHX_ a,b,c,d)
+#define sv_pos_u2b_cached(a,b,c,d,e,f,g) S_sv_pos_u2b_cached(aTHX_ a,b,c,d,e,f,g)
+#define utf8_mg_pos_cache_update(a,b,c,d,e) S_utf8_mg_pos_cache_update(aTHX_ a,b,c,d,e)
+#define sv_pos_b2u_forwards(a,b) S_sv_pos_b2u_forwards(aTHX_ a,b)
+#define sv_pos_b2u_midway(a,b,c,d) S_sv_pos_b2u_midway(aTHX_ a,b,c,d)