Re: Question regarding to Linux Cryptopp compilation/mem-leak

[tikcireviva]

I realize that its the program from my encryption function.
int myCrypt::encryption(unsigned char* msg,
          unsigned int msglen,
          unsigned char* cipherBlock,
          unsigned int cipherSize)
{
      // Create Array Sink
      ArraySink *pCipherSink = new ArraySink((byte*)cipherBlock, 
MAX_ENCRYPT_BLOCK_SIZE);
      if(pCipherSink == NULL)
      {
          printf("Cannot allocate memory for ArraySink\n");
          return 0; // zero or -1
      }
      DefaultEncryptorWithMAC encryptor(m_key, pCipherSink);

      // Encrypt the msg block
      encryptor.Put((byte*)msg, msglen);
      encryptor.MessageEnd();
      // Read data from the sink
      int rtnCipherSize = pCipherSink->TotalPutLength();
      // Delete encryptor and sink
      pCipherSink = NULL;
      delete pCipherSink;
      return rtnCipherSize;
}
I've wronly assigned the pCipherSink pointer to NULL. Oops... my problem.
Then it goes to another program, in the encryptBlock function,
before the program calls the *delete*. it assigns a NULL value to the 
"to-be deleted" pointer. Thus, the program deletes a NULL pointer, 
instead of a pointer which points to some newly created memory.

I think that's the reason.
And then, I've tried to takeout the NULL value assignment.
.......
     // Delete encryptor and sink
     //pCipherSink = NULL;
     delete pCipherSink;
     return rtnCipherSize;
}
However there is an error from smartptr.h. (from cryptopp again). From 
what I saw in ddd ( the debugger)

Program received singal SIGSEGV, Segmentation fault.
0x0805518c in ~member_ptr (this=0x4398c088) at smartptr.h:49
which is this line ...
template <class T> member_ptr<T>::~memptr_ptr() {delete m_p};
Could you mind give me some suggestions what I should do next? Thank you 
very much.

-tikviva