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From: larry@wizard.dsg.tandem.com (Larry Wear)
Newsgroups: comp.lang.c++
Subject: Why doesn't a void* & parameter get modified in C++ 2.0?
Keywords: ?
Message-ID: <1208@wizard.dsg.tandem.com>
Date: 12 Apr 90 22:56:04 GMT
Distribution: usa
Organization: Tandem Computers, Cupertino, CA
Lines: 34

The following program works correctly using AT&T's cfront 1.2,
however it does not work correctly using Sun's cfront 2.0.  The
NullIt method in the class go does not modify the pointer value
of name.  I would like to know why.  Thanks.         

#include <malloc.h>
#include <stream.h>

#define NULL 0
typedef void* ANY;

class bigFun
{
 public:

  void NullIt( ANY & pObject )
    {
      pObject = NULL;
    }
};

void main()
{
  bigFun go;
  char * name  = malloc(5);

  go.NullIt( (ANY)name );
  if ( name == NULL ) cout << "Success\n";
  else cout << "Failed\n";
}

--
Larry Wear                wizard!larry@Tandem.COM
Tandem Computers