diff --git a/compiler/aasmtai.pas b/compiler/aasmtai.pas
index bd1c3624e8..30edd804ad 100644
--- a/compiler/aasmtai.pas
+++ b/compiler/aasmtai.pas
@@ -209,7 +209,7 @@ interface
           constructor Create;
           constructor ppuload(t:taitype;ppufile:tcompilerppufile);virtual;
           procedure ppuwrite(ppufile:tcompilerppufile);virtual;
-          procedure buildderef;virtual;
+          procedure buildderefimpl;virtual;
           procedure derefimpl;virtual;
        end;
 
@@ -435,7 +435,7 @@ interface
        protected
           procedure ppuloadoper(ppufile:tcompilerppufile;var o:toper);virtual;abstract;
           procedure ppuwriteoper(ppufile:tcompilerppufile;const o:toper);virtual;abstract;
-          procedure ppubuildderefoper(var o:toper);virtual;abstract;
+          procedure ppubuildderefimploper(var o:toper);virtual;abstract;
           procedure ppuderefoper(var o:toper);virtual;abstract;
        public
           { Condition flags for instruction }
@@ -458,7 +458,7 @@ interface
           function getcopy:TLinkedListItem;override;
           constructor ppuload(t:taitype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           procedure SetCondition(const c:TAsmCond);
           procedure allocate_oper(opers:longint);
@@ -616,7 +616,7 @@ implementation
       end;
 
 
-    procedure tai.buildderef;
+    procedure tai.buildderefimpl;
       begin
       end;
 
@@ -2014,12 +2014,12 @@ implementation
       end;
 
 
-    procedure taicpu_abstract.buildderef;
+    procedure taicpu_abstract.buildderefimpl;
       var
         i : integer;
       begin
         for i:=0 to ops-1 do
-          ppubuildderefoper(oper[i]^);
+          ppubuildderefimploper(oper[i]^);
       end;
 
 
@@ -2139,7 +2139,11 @@ implementation
 end.
 {
   $Log$
-  Revision 1.46  2003-10-22 20:39:59  peter
+  Revision 1.47  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.46  2003/10/22 20:39:59  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.45  2003/10/21 15:15:35  peter
diff --git a/compiler/cclasses.pas b/compiler/cclasses.pas
index f3df9f4e62..6ffebd8b87 100644
--- a/compiler/cclasses.pas
+++ b/compiler/cclasses.pas
@@ -281,6 +281,7 @@ interface
        public
          constructor Create(Ablocksize:integer);
          destructor  Destroy;override;
+         procedure reset;
          function  size:integer;
          procedure align(i:integer);
          procedure seek(i:integer);
@@ -291,6 +292,7 @@ interface
          procedure writestream(f:TCStream);
          property  BlockSize : integer read FBlocksize;
          property  FirstBlock : PDynamicBlock read FFirstBlock;
+         property  Pos : integer read FPosn;
        end;
 
 
@@ -1672,7 +1674,7 @@ end;
          begin
            hp:=FFirstblock;
            FFirstblock:=FFirstblock^.Next;
-           freemem(hp,blocksize+dynamicblockbasesize);
+           Freemem(hp);
          end;
       end;
 
@@ -1686,6 +1688,24 @@ end;
       end;
 
 
+    procedure tdynamicarray.reset;
+      var
+        hp : pdynamicblock;
+      begin
+        while assigned(FFirstblock) do
+         begin
+           hp:=FFirstblock;
+           FFirstblock:=FFirstblock^.Next;
+           Freemem(hp);
+         end;
+        FPosn:=0;
+        FPosnblock:=nil;
+        FFirstblock:=nil;
+        FLastblock:=nil;
+        grow;
+      end;
+
+
     procedure tdynamicarray.grow;
       var
         nblock : pdynamicblock;
@@ -1885,7 +1905,11 @@ end;
 end.
 {
   $Log$
-  Revision 1.27  2003-10-22 20:40:00  peter
+  Revision 1.28  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.27  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.26  2003/10/11 16:06:42  florian
diff --git a/compiler/fmodule.pas b/compiler/fmodule.pas
index b721aa6a81..d0557bfffe 100644
--- a/compiler/fmodule.pas
+++ b/compiler/fmodule.pas
@@ -97,6 +97,7 @@ interface
         islibrary     : boolean;  { if it is a library (win32 dll) }
         map           : punitmap; { mapping of all used units }
         mapsize       : longint;  { number of units in the map }
+        derefdataintflen : longint;
         derefdata     : tdynamicarray;
         globalsymtable,           { pointer to the global symtable of this unit }
         localsymtable : tsymtable;{ pointer to the local symtable of this unit }
@@ -383,6 +384,7 @@ implementation
         map:=nil;
         mapsize:=0;
         derefdata:=TDynamicArray.Create(1024);
+        derefdataintflen:=0;
         globalsymtable:=nil;
         localsymtable:=nil;
         loaded_from:=LoadedFrom;
@@ -524,6 +526,7 @@ implementation
             freemem(map);
             map:=nil;
           end;
+        derefdataintflen:=0;
         mapsize:=0;
         sourcefiles.free;
         sourcefiles:=tinputfilemanager.create;
@@ -687,7 +690,11 @@ implementation
 end.
 {
   $Log$
-  Revision 1.40  2003-10-22 20:40:00  peter
+  Revision 1.41  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.40  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.39  2003/10/22 15:22:33  peter
diff --git a/compiler/fppu.pas b/compiler/fppu.pas
index 762da6e34c..047080d530 100644
--- a/compiler/fppu.pas
+++ b/compiler/fppu.pas
@@ -483,11 +483,15 @@ uses
 
     procedure tppumodule.writederefdata;
       var
+        oldcrc : boolean;
         len,hlen : longint;
         buf : array[0..1023] of byte;
       begin
-        len:=derefdata.size;
+        if derefdataintflen>derefdata.size then
+          internalerror(200310223);
         derefdata.seek(0);
+        { Write interface data }
+        len:=derefdataintflen;
         while (len>0) do
           begin
             if len>1024 then
@@ -498,6 +502,23 @@ uses
             ppufile.putdata(buf,hlen);
             dec(len,hlen);
           end;
+        { Write implementation data, this does not influence crc }
+        oldcrc:=ppufile.do_crc;
+        ppufile.do_crc:=false;
+        len:=derefdata.size-derefdataintflen;
+        while (len>0) do
+          begin
+            if len>1024 then
+              hlen:=1024
+            else
+              hlen:=len;
+            derefdata.read(buf,hlen);
+            ppufile.putdata(buf,hlen);
+            dec(len,hlen);
+          end;
+        if derefdata.pos<>derefdata.size then
+          internalerror(200310224);
+        ppufile.do_crc:=oldcrc;
         ppufile.writeentry(ibderefdata);
       end;
 
@@ -870,9 +891,13 @@ uses
          { we can now derefence all pointers to the implementation parts }
          oldobjectlibrary:=objectlibrary;
          objectlibrary:=librarydata;
+         aktglobalsymtable:=tstoredsymtable(globalsymtable);
          tstoredsymtable(globalsymtable).derefimpl;
          if assigned(localsymtable) then
-           tstoredsymtable(localsymtable).derefimpl;
+           begin
+             aktstaticsymtable:=tstoredsymtable(localsymtable);
+             tstoredsymtable(localsymtable).derefimpl;
+           end;
          objectlibrary:=oldobjectlibrary;
       end;
 
@@ -958,11 +983,23 @@ uses
          writelinkcontainer(linkothersharedlibs,iblinkothersharedlibs,true);
          ppufile.do_crc:=true;
 
-         { generate and write deref data }
-         tstoredsymtable(globalsymtable).buildderef;
+         { generate implementation deref data, the interface deref data is
+           already generated when calculating the interface crc }
+         if (cs_compilesystem in aktmoduleswitches) then
+           begin
+             aktglobalsymtable:=tstoredsymtable(globalsymtable);
+             tstoredsymtable(globalsymtable).buildderef;
+             derefdataintflen:=derefdata.size;
+           end;
+         tstoredsymtable(globalsymtable).buildderefimpl;
          if ((flags and uf_local_browser)<>0) and
             assigned(localsymtable) then
-           tstoredsymtable(localsymtable).buildderef;
+           begin
+             aktglobalsymtable:=tstoredsymtable(globalsymtable);
+             aktstaticsymtable:=tstoredsymtable(localsymtable);
+             tstoredsymtable(localsymtable).buildderef;
+             tstoredsymtable(localsymtable).buildderefimpl;
+           end;
          writederefdata;
 
          ppufile.writeentry(ibendinterface);
@@ -1052,6 +1089,13 @@ uses
          { the interface units affect the crc }
          writeusedunit(true);
 
+         { deref data of interface that affect the crc }
+         derefdata.reset;
+         aktglobalsymtable:=tstoredsymtable(globalsymtable);
+         tstoredsymtable(globalsymtable).buildderef;
+         derefdataintflen:=derefdata.size;
+         writederefdata;
+
          ppufile.writeentry(ibendinterface);
 
          { write the symtable entries }
@@ -1466,7 +1510,11 @@ if modulename^='SYMSYM' then
 end.
 {
   $Log$
-  Revision 1.42  2003-10-22 20:40:00  peter
+  Revision 1.43  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.42  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.41  2003/10/22 17:38:25  peter
diff --git a/compiler/nbas.pas b/compiler/nbas.pas
index 0cb635a0c5..a5243cc7ee 100644
--- a/compiler/nbas.pas
+++ b/compiler/nbas.pas
@@ -60,7 +60,7 @@ interface
           destructor destroy;override;
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           function getcopy : tnode;override;
           function pass_1 : tnode;override;
@@ -544,15 +544,15 @@ implementation
       end;
 
 
-    procedure tasmnode.buildderef;
+    procedure tasmnode.buildderefimpl;
       var
         hp : tai;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         hp:=tai(p_asm.first);
         while assigned(hp) do
          begin
-           hp.buildderef;
+           hp.buildderefimpl;
            hp:=tai(hp.next);
          end;
       end;
@@ -845,7 +845,11 @@ begin
 end.
 {
   $Log$
-  Revision 1.68  2003-10-22 20:40:00  peter
+  Revision 1.69  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.68  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.67  2003/10/21 18:15:16  peter
diff --git a/compiler/ncal.pas b/compiler/ncal.pas
index e3f59b1c8d..51a4b45b93 100644
--- a/compiler/ncal.pas
+++ b/compiler/ncal.pas
@@ -114,7 +114,7 @@ interface
           destructor destroy;override;
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           function  getcopy : tnode;override;
           { Goes through all symbols in a class and subclasses and calls
@@ -974,17 +974,17 @@ type
       end;
 
 
-    procedure tcallnode.buildderef;
+    procedure tcallnode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         symtableprocentryderef.build(symtableprocentry);
         procdefinitionderef.build(procdefinition);
         if assigned(methodpointer) then
-          methodpointer.buildderef;
+          methodpointer.buildderefimpl;
         if assigned(_funcretnode) then
-          _funcretnode.buildderef;
+          _funcretnode.buildderefimpl;
         if assigned(inlinecode) then
-          inlinecode.buildderef;
+          inlinecode.buildderefimpl;
       end;
 
 
@@ -2584,7 +2584,11 @@ begin
 end.
 {
   $Log$
-  Revision 1.199  2003-10-22 20:40:00  peter
+  Revision 1.200  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.199  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.198  2003/10/21 18:17:02  peter
diff --git a/compiler/ncnv.pas b/compiler/ncnv.pas
index e181d5cbf6..3dd6dcd4da 100644
--- a/compiler/ncnv.pas
+++ b/compiler/ncnv.pas
@@ -44,7 +44,7 @@ interface
           constructor create_explicit(node : tnode;const t : ttype);
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           function getcopy : tnode;override;
           function pass_1 : tnode;override;
@@ -499,9 +499,9 @@ implementation
       end;
 
 
-    procedure ttypeconvnode.buildderef;
+    procedure ttypeconvnode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         totype.buildderef;
       end;
 
@@ -2111,7 +2111,11 @@ begin
 end.
 {
   $Log$
-  Revision 1.125  2003-10-22 20:40:00  peter
+  Revision 1.126  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.125  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.124  2003/10/21 18:16:13  peter
diff --git a/compiler/ncon.pas b/compiler/ncon.pas
index 2b5a851d09..a0dc7e6818 100644
--- a/compiler/ncon.pas
+++ b/compiler/ncon.pas
@@ -40,7 +40,7 @@ interface
           constructor create(v : bestreal;const t:ttype);virtual;
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           function getcopy : tnode;override;
           function pass_1 : tnode;override;
@@ -61,7 +61,7 @@ interface
           constructor create(v : tconstexprint;const t:ttype; _rangecheck : boolean);virtual;
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           function getcopy : tnode;override;
           function pass_1 : tnode;override;
@@ -77,7 +77,7 @@ interface
           constructor create(v : TConstPtrUInt;const t:ttype);virtual;
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           function getcopy : tnode;override;
           function pass_1 : tnode;override;
@@ -96,7 +96,7 @@ interface
           constructor createwstr(w : pcompilerwidestring);virtual;
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           destructor destroy;override;
           function getcopy : tnode;override;
@@ -115,7 +115,7 @@ interface
           destructor destroy;override;
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           function getcopy : tnode;override;
           function pass_1 : tnode;override;
@@ -370,9 +370,9 @@ implementation
       end;
 
 
-    procedure trealconstnode.buildderef;
+    procedure trealconstnode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         restype.buildderef;
       end;
 
@@ -463,9 +463,9 @@ implementation
       end;
 
 
-    procedure tordconstnode.buildderef;
+    procedure tordconstnode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         restype.buildderef;
       end;
 
@@ -548,9 +548,9 @@ implementation
       end;
 
 
-    procedure tpointerconstnode.buildderef;
+    procedure tpointerconstnode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         restype.buildderef;
       end;
 
@@ -681,9 +681,9 @@ implementation
       end;
 
 
-    procedure tstringconstnode.buildderef;
+    procedure tstringconstnode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
       end;
 
 
@@ -805,9 +805,9 @@ implementation
       end;
 
 
-    procedure tsetconstnode.buildderef;
+    procedure tsetconstnode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         restype.buildderef;
       end;
 
@@ -950,7 +950,11 @@ begin
 end.
 {
   $Log$
-  Revision 1.55  2003-10-22 20:40:00  peter
+  Revision 1.56  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.55  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.54  2003/10/07 18:17:44  peter
diff --git a/compiler/nflw.pas b/compiler/nflw.pas
index 142703cf8c..fa26d45a11 100644
--- a/compiler/nflw.pas
+++ b/compiler/nflw.pas
@@ -60,7 +60,7 @@ interface
           function getcopy : tnode;override;
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           procedure insertintolist(l : tnodelist);override;
           procedure printnodetree(var t:text);override;
@@ -125,7 +125,7 @@ interface
 {          constructor createintern(g:tinterngotolabel);}
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           function getcopy : tnode;override;
           function det_resulttype:tnode;override;
@@ -143,7 +143,7 @@ interface
           constructor create(p : tlabelsym;l:tnode);virtual;
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           function getcopy : tnode;override;
           function det_resulttype:tnode;override;
@@ -157,7 +157,7 @@ interface
           constructor create(l,taddr,tframe:tnode);virtual;
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           function getcopy : tnode;override;
           procedure insertintolist(l : tnodelist);override;
@@ -287,13 +287,13 @@ implementation
       end;
 
 
-    procedure tloopnode.buildderef;
+    procedure tloopnode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         if assigned(t1) then
-          t1.buildderef;
+          t1.buildderefimpl;
         if assigned(t2) then
-          t2.buildderef;
+          t2.buildderefimpl;
       end;
 
 
@@ -979,9 +979,9 @@ implementation
       end;
 
 
-    procedure tgotonode.buildderef;
+    procedure tgotonode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         labsymderef.build(labsym);
       end;
 
@@ -1076,9 +1076,9 @@ implementation
       end;
 
 
-    procedure tlabelnode.buildderef;
+    procedure tlabelnode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         labsymderef.build(labsym);
       end;
 
@@ -1160,11 +1160,11 @@ implementation
       end;
 
 
-    procedure traisenode.buildderef;
+    procedure traisenode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         if assigned(frametree) then
-          frametree.buildderef;
+          frametree.buildderefimpl;
       end;
 
 
@@ -1467,7 +1467,11 @@ begin
 end.
 {
   $Log$
-  Revision 1.84  2003-10-22 20:40:00  peter
+  Revision 1.85  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.84  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.83  2003/10/09 21:31:37  daniel
diff --git a/compiler/nld.pas b/compiler/nld.pas
index b21fb410d9..79b16806e9 100644
--- a/compiler/nld.pas
+++ b/compiler/nld.pas
@@ -44,7 +44,7 @@ interface
           constructor create_procvar(v : tsym;d:tprocdef;st : tsymtable);virtual;
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           procedure set_mp(p:tnode);
           function  getcopy : tnode;override;
@@ -98,7 +98,7 @@ interface
           constructor create(t : ttype);virtual;
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           function pass_1 : tnode;override;
           function det_resulttype:tnode;override;
@@ -114,7 +114,7 @@ interface
           constructor create(def:tstoreddef;rt:trttitype);virtual;
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           function  getcopy : tnode;override;
           function pass_1 : tnode;override;
@@ -327,9 +327,9 @@ implementation
       end;
 
 
-    procedure tloadnode.buildderef;
+    procedure tloadnode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         symtableentryderef.build(symtableentry);
         procdefderef.build(procdef);
       end;
@@ -1133,9 +1133,9 @@ implementation
       end;
 
 
-    procedure ttypenode.buildderef;
+    procedure ttypenode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         restype.buildderef;
       end;
 
@@ -1206,9 +1206,9 @@ implementation
       end;
 
 
-    procedure trttinode.buildderef;
+    procedure trttinode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         rttidefderef.build(rttidef);
       end;
 
@@ -1272,7 +1272,11 @@ begin
 end.
 {
   $Log$
-  Revision 1.114  2003-10-22 20:40:00  peter
+  Revision 1.115  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.114  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.113  2003/10/17 14:38:32  peter
diff --git a/compiler/nmem.pas b/compiler/nmem.pas
index 6496cadfde..4faa12ecaa 100644
--- a/compiler/nmem.pas
+++ b/compiler/nmem.pas
@@ -55,7 +55,7 @@ interface
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
           procedure mark_write;override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           function getcopy : tnode;override;
           function pass_1 : tnode;override;
@@ -77,7 +77,7 @@ interface
           constructor create(varsym : tsym;l : tnode);virtual;
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           function getcopy : tnode;override;
           function pass_1 : tnode;override;
@@ -239,9 +239,9 @@ implementation
       left.mark_write;
     end;
 
-    procedure taddrnode.buildderef;
+    procedure taddrnode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         getprocvardefderef.build(getprocvardef);
       end;
 
@@ -530,9 +530,9 @@ implementation
       end;
 
 
-    procedure tsubscriptnode.buildderef;
+    procedure tsubscriptnode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         vsderef.build(vs);
       end;
 
@@ -920,7 +920,11 @@ begin
 end.
 {
   $Log$
-  Revision 1.67  2003-10-22 20:40:00  peter
+  Revision 1.68  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.67  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.66  2003/10/21 18:16:13  peter
diff --git a/compiler/node.pas b/compiler/node.pas
index b8ac772f1b..48c236b91f 100644
--- a/compiler/node.pas
+++ b/compiler/node.pas
@@ -296,7 +296,7 @@ interface
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);virtual;
           destructor destroy;override;
           procedure ppuwrite(ppufile:tcompilerppufile);virtual;
-          procedure buildderef;virtual;
+          procedure buildderefimpl;virtual;
           procedure derefimpl;virtual;
 
           { toggles the flag }
@@ -357,7 +357,7 @@ interface
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           destructor destroy;override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           procedure concattolist(l : tlinkedlist);override;
           function ischild(p : tnode) : boolean;override;
@@ -375,7 +375,7 @@ interface
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           destructor destroy;override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           procedure concattolist(l : tlinkedlist);override;
           function ischild(p : tnode) : boolean;override;
@@ -559,7 +559,7 @@ implementation
       end;
 
 
-    procedure tnode.buildderef;
+    procedure tnode.buildderefimpl;
       begin
         resulttype.buildderef;
       end;
@@ -744,11 +744,11 @@ implementation
       end;
 
 
-    procedure tunarynode.buildderef;
+    procedure tunarynode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         if assigned(left) then
-          left.buildderef;
+          left.buildderefimpl;
       end;
 
 
@@ -849,11 +849,11 @@ implementation
       end;
 
 
-    procedure tbinarynode.buildderef;
+    procedure tbinarynode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         if assigned(right) then
-          right.buildderef;
+          right.buildderefimpl;
       end;
 
 
@@ -994,7 +994,11 @@ implementation
 end.
 {
   $Log$
-  Revision 1.72  2003-10-22 20:40:00  peter
+  Revision 1.73  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.72  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.71  2003/10/18 15:41:26  peter
diff --git a/compiler/nset.pas b/compiler/nset.pas
index 23e1dd4030..ff0458c72e 100644
--- a/compiler/nset.pas
+++ b/compiler/nset.pas
@@ -79,7 +79,7 @@ interface
           destructor destroy;override;
           constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
-          procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure derefimpl;override;
           function getcopy : tnode;override;
           procedure insertintolist(l : tnodelist);override;
@@ -546,12 +546,12 @@ implementation
       end;
 
 
-    procedure tcasenode.buildderef;
+    procedure tcasenode.buildderefimpl;
       begin
-        inherited buildderef;
+        inherited buildderefimpl;
         if assigned(elseblock) then
-          elseblock.buildderef;
-        {ppubuildderefcaserecord(nodes);}
+          elseblock.buildderefimpl;
+        {ppubuildderefimplcaserecord(nodes);}
       end;
 
 
@@ -695,7 +695,11 @@ begin
 end.
 {
   $Log$
-  Revision 1.48  2003-10-22 20:40:00  peter
+  Revision 1.49  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.48  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.47  2003/10/09 21:31:37  daniel
diff --git a/compiler/symdef.pas b/compiler/symdef.pas
index 731af2137a..f38cefdf7b 100644
--- a/compiler/symdef.pas
+++ b/compiler/symdef.pas
@@ -77,6 +77,7 @@ interface
           procedure ppuwritedef(ppufile:tcompilerppufile);
           procedure ppuwrite(ppufile:tcompilerppufile);virtual;abstract;
           procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure deref;override;
           procedure derefimpl;override;
           function  size:longint;override;
@@ -544,6 +545,7 @@ interface
           destructor  destroy;override;
           procedure ppuwrite(ppufile:tcompilerppufile);override;
           procedure buildderef;override;
+          procedure buildderefimpl;override;
           procedure deref;override;
           procedure derefimpl;override;
           function  getsymtable(t:tgetsymtable):tsymtable;override;
@@ -1001,6 +1003,11 @@ implementation
       end;
 
 
+    procedure tstoreddef.buildderefimpl;
+      begin
+      end;
+
+
     procedure tstoreddef.deref;
       begin
         typesym:=ttypesym(typesymderef.resolve);
@@ -3297,6 +3304,9 @@ implementation
       var
          hp : TParaItem;
       begin
+         { released procdef? }
+         if not assigned(parast) then
+           exit;
          inherited buildderef;
          rettype.buildderef;
          { parast }
@@ -3526,6 +3536,9 @@ implementation
 
     procedure tabstractprocdef.concatstabto(asmlist : taasmoutput);
       begin
+         { released procdef? }
+         if not assigned(parast) then
+           exit;
          if (not assigned(typesym) or ttypesym(typesym).isusedinstab or (cs_gdb_dbx in aktglobalswitches))
             and (is_def_stab_written = not_written)  then
            begin
@@ -4063,6 +4076,9 @@ implementation
 
     procedure tprocdef.concatstabto(asmlist : taasmoutput);
     begin
+      { released procdef? }
+      if not assigned(parast) then
+        exit;
       if (proccalloption=pocall_internproc) then
         exit;
       if not isstabwritten then
@@ -4098,16 +4114,37 @@ implementation
            same symtable }
          procsymderef.build(procsym);
 
+         aktparasymtable:=oldparasymtable;
+         aktlocalsymtable:=oldlocalsymtable;
+      end;
+
+
+    procedure tprocdef.buildderefimpl;
+      var
+        oldparasymtable,
+        oldlocalsymtable : tsymtable;
+      begin
+         { released procdef? }
+         if not assigned(parast) then
+           exit;
+
+         oldparasymtable:=aktparasymtable;
+         oldlocalsymtable:=aktlocalsymtable;
+         aktparasymtable:=parast;
+         aktlocalsymtable:=localst;
+
+         inherited buildderefimpl;
+
          { locals }
          if assigned(localst) then
           begin
-            tlocalsymtable(localst).buildderef;
+            tlocalsymtable(localst).buildderefimpl;
             funcretsymderef.build(funcretsym);
           end;
 
          { inline tree }
          if (proccalloption=pocall_inline) then
-           code.buildderef;
+           code.buildderefimpl;
 
          aktparasymtable:=oldparasymtable;
          aktlocalsymtable:=oldlocalsymtable;
@@ -4119,6 +4156,10 @@ implementation
         oldparasymtable,
         oldlocalsymtable : tsymtable;
       begin
+         { released procdef? }
+         if not assigned(parast) then
+           exit;
+
          oldparasymtable:=aktparasymtable;
          oldlocalsymtable:=aktlocalsymtable;
          aktparasymtable:=parast;
@@ -6050,7 +6091,11 @@ implementation
 end.
 {
   $Log$
-  Revision 1.183  2003-10-22 20:40:00  peter
+  Revision 1.184  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.183  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.182  2003/10/21 18:14:49  peter
diff --git a/compiler/symppu.pas b/compiler/symppu.pas
index 3a827198a9..11231834be 100644
--- a/compiler/symppu.pas
+++ b/compiler/symppu.pas
@@ -332,8 +332,13 @@ implementation
 
 
     procedure tcompilerppufile.putderef(const d:tderef);
+      var
+        oldcrc : boolean;
       begin
+        oldcrc:=do_crc;
+        do_crc:=false;
         putlongint(d.dataidx);
+        do_crc:=oldcrc;
       end;
 
 
@@ -387,7 +392,11 @@ implementation
 end.
 {
   $Log$
-  Revision 1.21  2003-10-22 20:40:00  peter
+  Revision 1.22  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.21  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.20  2003/10/07 16:06:30  peter
diff --git a/compiler/symtable.pas b/compiler/symtable.pas
index 6bc24bc4e3..93b5cf557f 100644
--- a/compiler/symtable.pas
+++ b/compiler/symtable.pas
@@ -71,6 +71,7 @@ interface
           procedure load_references(ppufile:tcompilerppufile;locals:boolean);virtual;
           procedure write_references(ppufile:tcompilerppufile;locals:boolean);virtual;
           procedure buildderef;virtual;
+          procedure buildderefimpl;virtual;
           procedure deref;virtual;
           procedure derefimpl;virtual;
           procedure insert(sym : tsymentry);override;
@@ -494,6 +495,20 @@ implementation
       end;
 
 
+    procedure tstoredsymtable.buildderefimpl;
+      var
+        hp : tdef;
+      begin
+        { deref the implementation part of definitions }
+        hp:=tdef(defindex.first);
+        while assigned(hp) do
+         begin
+           hp.buildderefimpl;
+           hp:=tdef(hp.indexnext);
+         end;
+      end;
+
+
     procedure tstoredsymtable.deref;
       var
         hp : tdef;
@@ -2282,7 +2297,11 @@ implementation
 end.
 {
   $Log$
-  Revision 1.119  2003-10-22 20:40:00  peter
+  Revision 1.120  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.119  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.118  2003/10/22 15:22:33  peter
diff --git a/compiler/symtype.pas b/compiler/symtype.pas
index 8d259241a6..dcabd92dc1 100644
--- a/compiler/symtype.pas
+++ b/compiler/symtype.pas
@@ -71,6 +71,7 @@ interface
          defoptions : tdefoptions;
          constructor create;
          procedure buildderef;virtual;abstract;
+         procedure buildderefimpl;virtual;abstract;
          procedure deref;virtual;abstract;
          procedure derefimpl;virtual;abstract;
          function  typename:string;
@@ -914,7 +915,11 @@ finalization
 end.
 {
   $Log$
-  Revision 1.31  2003-10-22 20:40:00  peter
+  Revision 1.32  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.31  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.30  2003/10/22 15:22:33  peter
diff --git a/compiler/x86/aasmcpu.pas b/compiler/x86/aasmcpu.pas
index b0f8ee23c5..92732e7ff8 100644
--- a/compiler/x86/aasmcpu.pas
+++ b/compiler/x86/aasmcpu.pas
@@ -210,7 +210,7 @@ interface
       protected
          procedure ppuloadoper(ppufile:tcompilerppufile;var o:toper);override;
          procedure ppuwriteoper(ppufile:tcompilerppufile;const o:toper);override;
-         procedure ppubuildderefoper(var o:toper);override;
+         procedure ppubuildderefimploper(var o:toper);override;
          procedure ppuderefoper(var o:toper);override;
       private
          { next fields are filled in pass1, so pass2 is faster }
@@ -807,7 +807,7 @@ implementation
       end;
 
 
-    procedure taicpu.ppubuildderefoper(var o:toper);
+    procedure taicpu.ppubuildderefimploper(var o:toper);
       begin
         case o.typ of
           top_local :
@@ -2328,7 +2328,11 @@ implementation
 end.
 {
   $Log$
-  Revision 1.34  2003-10-22 20:40:00  peter
+  Revision 1.35  2003-10-23 14:44:07  peter
+    * splitted buildderef and buildderefimpl to fix interface crc
+      calculation
+
+  Revision 1.34  2003/10/22 20:40:00  peter
     * write derefdata in a separate ppu entry
 
   Revision 1.33  2003/10/21 15:15:36  peter