diff --git a/src/cff/cffcmap.c b/src/cff/cffcmap.c
index 94077c596..10d287bc8 100644
--- a/src/cff/cffcmap.c
+++ b/src/cff/cffcmap.c
@@ -32,9 +32,10 @@
   /*************************************************************************/
 
   FT_CALLBACK_DEF( FT_Error )
-  cff_cmap_encoding_init( CFF_CMapStd  cmap,
-                          FT_Pointer   pointer )
+  cff_cmap_encoding_init( FT_CMap     cmap,
+                          FT_Pointer  pointer )
   {
+    CFF_CMapStd   cffcmap  = (CFF_CMapStd)cmap;
     TT_Face       face     = (TT_Face)FT_CMAP_FACE( cmap );
     CFF_Font      cff      = (CFF_Font)face->extra.data;
     CFF_Encoding  encoding = &cff->encoding;
@@ -42,44 +43,49 @@
     FT_UNUSED( pointer );
 
 
-    cmap->gids  = encoding->codes;
+    cffcmap->gids = encoding->codes;
 
     return 0;
   }
 
 
   FT_CALLBACK_DEF( void )
-  cff_cmap_encoding_done( CFF_CMapStd  cmap )
+  cff_cmap_encoding_done( FT_CMap  cmap )
   {
-    cmap->gids  = NULL;
+    CFF_CMapStd  cffcmap = (CFF_CMapStd)cmap;
+
+
+    cffcmap->gids = NULL;
   }
 
 
   FT_CALLBACK_DEF( FT_UInt )
-  cff_cmap_encoding_char_index( CFF_CMapStd  cmap,
-                                FT_UInt32    char_code )
+  cff_cmap_encoding_char_index( FT_CMap    cmap,
+                                FT_UInt32  char_code )
   {
-    FT_UInt  result = 0;
+    CFF_CMapStd  cffcmap = (CFF_CMapStd)cmap;
+    FT_UInt      result  = 0;
 
 
     if ( char_code < 256 )
-      result = cmap->gids[char_code];
+      result = cffcmap->gids[char_code];
 
     return result;
   }
 
 
   FT_CALLBACK_DEF( FT_UInt )
-  cff_cmap_encoding_char_next( CFF_CMapStd   cmap,
-                               FT_UInt32    *pchar_code )
+  cff_cmap_encoding_char_next( FT_CMap     cmap,
+                               FT_UInt32  *pchar_code )
   {
-    FT_UInt    result    = 0;
-    FT_UInt32  char_code = *pchar_code;
+    CFF_CMapStd  cffcmap   = (CFF_CMapStd)cmap;
+    FT_UInt      result    = 0;
+    FT_UInt32    char_code = *pchar_code;
 
 
     while ( char_code < 255 )
     {
-      result = cmap->gids[++char_code];
+      result = cffcmap->gids[++char_code];
       if ( result )
       {
         *pchar_code = char_code;
@@ -118,9 +124,10 @@
   /*************************************************************************/
 
   FT_CALLBACK_DEF( const char* )
-  cff_sid_to_glyph_name( TT_Face  face,
+  cff_sid_to_glyph_name( void*    face_,  /* TT_Face */
                          FT_UInt  idx )
   {
+    TT_Face      face    = (TT_Face)face_;
     CFF_Font     cff     = (CFF_Font)face->extra.data;
     CFF_Charset  charset = &cff->charset;
     FT_UInt      sid     = charset->sids[idx];
@@ -131,14 +138,15 @@
 
 
   FT_CALLBACK_DEF( FT_Error )
-  cff_cmap_unicode_init( PS_Unicodes  unicodes,
+  cff_cmap_unicode_init( FT_CMap      cmap,     /* PS_Unicodes */
                          FT_Pointer   pointer )
   {
-    TT_Face             face    = (TT_Face)FT_CMAP_FACE( unicodes );
-    FT_Memory           memory  = FT_FACE_MEMORY( face );
-    CFF_Font            cff     = (CFF_Font)face->extra.data;
-    CFF_Charset         charset = &cff->charset;
-    FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)cff->psnames;
+    PS_Unicodes         unicodes = (PS_Unicodes)cmap;
+    TT_Face             face     = (TT_Face)FT_CMAP_FACE( cmap );
+    FT_Memory           memory   = FT_FACE_MEMORY( face );
+    CFF_Font            cff      = (CFF_Font)face->extra.data;
+    CFF_Charset         charset  = &cff->charset;
+    FT_Service_PsCMaps  psnames  = (FT_Service_PsCMaps)cff->psnames;
 
     FT_UNUSED( pointer );
 
@@ -154,17 +162,18 @@
     return psnames->unicodes_init( memory,
                                    unicodes,
                                    cff->num_glyphs,
-                                   (PS_GetGlyphNameFunc)&cff_sid_to_glyph_name,
+                                   &cff_sid_to_glyph_name,
                                    (PS_FreeGlyphNameFunc)NULL,
                                    (FT_Pointer)face );
   }
 
 
   FT_CALLBACK_DEF( void )
-  cff_cmap_unicode_done( PS_Unicodes  unicodes )
+  cff_cmap_unicode_done( FT_CMap  cmap )    /* PS_Unicodes */
   {
-    FT_Face    face   = FT_CMAP_FACE( unicodes );
-    FT_Memory  memory = FT_FACE_MEMORY( face );
+    PS_Unicodes  unicodes = (PS_Unicodes)cmap;
+    FT_Face      face     = FT_CMAP_FACE( cmap );
+    FT_Memory    memory   = FT_FACE_MEMORY( face );
 
 
     FT_FREE( unicodes->maps );
@@ -173,12 +182,13 @@
 
 
   FT_CALLBACK_DEF( FT_UInt )
-  cff_cmap_unicode_char_index( PS_Unicodes  unicodes,
-                               FT_UInt32    char_code )
+  cff_cmap_unicode_char_index( FT_CMap    cmap,       /* PS_Unicodes */
+                               FT_UInt32  char_code )
   {
-    TT_Face             face    = (TT_Face)FT_CMAP_FACE( unicodes );
-    CFF_Font            cff     = (CFF_Font)face->extra.data;
-    FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)cff->psnames;
+    PS_Unicodes         unicodes = (PS_Unicodes)cmap;
+    TT_Face             face     = (TT_Face)FT_CMAP_FACE( cmap );
+    CFF_Font            cff      = (CFF_Font)face->extra.data;
+    FT_Service_PsCMaps  psnames  = (FT_Service_PsCMaps)cff->psnames;
 
 
     return psnames->unicodes_char_index( unicodes, char_code );
@@ -186,12 +196,13 @@
 
 
   FT_CALLBACK_DEF( FT_UInt )
-  cff_cmap_unicode_char_next( PS_Unicodes  unicodes,
-                              FT_UInt32   *pchar_code )
+  cff_cmap_unicode_char_next( FT_CMap     cmap,        /* PS_Unicodes */
+                              FT_UInt32  *pchar_code )
   {
-    TT_Face             face    = (TT_Face)FT_CMAP_FACE( unicodes );
-    CFF_Font            cff     = (CFF_Font)face->extra.data;
-    FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)cff->psnames;
+    PS_Unicodes         unicodes = (PS_Unicodes)cmap;
+    TT_Face             face     = (TT_Face)FT_CMAP_FACE( cmap );
+    CFF_Font            cff      = (CFF_Font)face->extra.data;
+    FT_Service_PsCMaps  psnames  = (FT_Service_PsCMaps)cff->psnames;
 
 
     return psnames->unicodes_char_next( unicodes, pchar_code );