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Revision cc8edaf7e8e8eff2fc61804b5f00f0d32db7887d authored by Rene Brun on 01 July 2004, 20:02:52 UTC, committed by Rene Brun on 01 July 2004, 20:02:52 UTC 
From Philippe:
 
I attached the modifications that are needed in gcc3strm.cxx to compile with gcc 3.4.0.

There are 2 problems.

One is that I could not find any trace of
    ostream& operator<< (ostream&,const streampos&);
in the gcc 3.3.1 or the gcc 3.4.0 header files.
However it is in cint/lib/gcc3strm/iostrm.h and of course in gcc3strm.cxx

The second problem is more fundamental.  In gcc 3.4.0, streamoff is defined
as (include/c++/3.4.0/bits/postypes.h)
  #ifdef _GLIBCXX_HAVE_INT64_T
    typedef int64_t       streamoff;
  #else
    typedef long long     streamoff;
  #endif
in turn int64_t is platform dependent.  In particular, on my node int64_t
is typedef to an int.  In gcc 3.3.1, streamoff was a long.

This leads to the compilation error:

  cint/src/gcc3strm.cxx: In function `int G__G__stream_6_4_0(G__value*, const char*, G__param*, int)':
  cint/src/gcc3strm.cxx:149: error: 'const class std::fpos<mbstate_t>' has no member named 'operator long int'

As a quick fix, I simply replaced the implementatio of the wrapper so
that it does not do an explicit call to the operator long:
   const fpos<mbstate_t>*pos = (const fpos<mbstate_t>*)(G__getstructoffset());
   G__letint(result7,108,(long)(*pos));
instead of
   G__letint(result7,108,(long)((const fpos<mbstate_t>*)(G__getstructoffset()))->operator long());

Of course, this is fundamentally wrong, since on a 64 bit platform, this will truncate the long long
into a long.

I am not sure what would be good solution (theoritically, it would require to make sure that the
dictionary for fpos<mbstate_t> is different (long vs long long) on the appropriate platforms).


git-svn-id: http://root.cern.ch/svn/root/trunk@9367 27541ba8-7e3a-0410-8455-c3a389f83636
1 parent 023bf10
Raw File
TRef.h 
// @(#)root/cont:$Name:  $:$Id: TRef.h,v 1.5 2001/12/02 15:20:06 brun Exp $
// Author: Rene Brun   28/09/2001

/*************************************************************************
 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/

#ifndef ROOT_TRef
#define ROOT_TRef


//////////////////////////////////////////////////////////////////////////
//                                                                      //
// TRef                                                                 //
//                                                                      //
// Persistent Reference link to a TObject                               //
//                                                                      //
//////////////////////////////////////////////////////////////////////////


#ifndef ROOT_TObject
#include "TObject.h"
#endif

class TProcessID;
class TFile;
class TExec;
class TObjArray;

class TRef : public TObject {

protected:
   TProcessID       *fPID;     //!Pointer to ProcessID when TRef was written

   static TObjArray  *fgExecs;  //List of execs
   static TObject    *fgObject; //Pointer to object (set in Action on Demand)
      
public:
   //status bits
   enum { kNotComputed = BIT(12)};

   TRef() {fPID = 0;}
   TRef(TObject *obj);
   TRef(const TRef &ref);
   void operator=(TObject *obj);
   TRef& operator=(const TRef &ref);
   virtual ~TRef() {;}
   static Int_t       AddExec(const char *name);
          TObject    *GetObject() const;
   static TObjArray  *GetListOfExecs();
   TProcessID        *GetPID() const {return fPID;}
   Bool_t             IsValid() const {return GetUniqueID()!=0 ? kTRUE : kFALSE;}virtual void       SetAction(const char *name);
   virtual void       SetAction(TObject *parent);
   static  void       SetObject(TObject *obj);
   
   friend Bool_t operator==(const TRef &r1, const TRef &r2);
   friend Bool_t operator!=(const TRef &r1, const TRef &r2);

   ClassDef(TRef,1)  //Persistent Reference link to a TObject
};

#endif
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