[CursivePosFormat1] Use typed offsets for EntryExitRecord

src/OT/Layout/GPOS/CursivePosFormat1.hh

@@ -18,14 +18,14 @@ struct EntryExitRecord
   }
 
   void collect_variation_indices (hb_collect_variation_indices_context_t *c,
-                                  const void *src_base) const
+                                  const struct CursivePosFormat1 *src_base) const
   {
     (src_base+entryAnchor).collect_variation_indices (c);
     (src_base+exitAnchor).collect_variation_indices (c);
   }
 
   bool subset (hb_subset_context_t *c,
-	       const void *src_base) const
+	       const struct CursivePosFormat1 *src_base) const
   {
     TRACE_SERIALIZE (this);
     auto *out = c->serializer->embed (this);
@@ -38,11 +38,11 @@ struct EntryExitRecord
   }
 
   protected:
-  Offset16To<Anchor>
+  Offset16To<Anchor, struct CursivePosFormat1>
                 entryAnchor;            /* Offset to EntryAnchor table--from
                                          * beginning of CursivePos
                                          * subtable--may be NULL */
-  Offset16To<Anchor>
+  Offset16To<Anchor, struct CursivePosFormat1>
                 exitAnchor;             /* Offset to ExitAnchor table--from
                                          * beginning of CursivePos
                                          * subtable--may be NULL */
@@ -262,7 +262,7 @@ struct CursivePosFormat1
             hb_requires (hb_is_iterator (Iterator))>
   void serialize (hb_subset_context_t *c,
                   Iterator it,
-                  const void *src_base)
+                  const struct CursivePosFormat1 *src_base)
   {
     if (unlikely (!c->serializer->extend_min ((*this)))) return;
     this->format = 1;