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C++ destructor problem

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C++ destructor problem

 
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  #1
Oct 4th, 2009
Hi, Im new to c++ and Im struggling with something.

I have a load of classes that all connect to each other. I globally overloaded the << operator for each class. So in my main I do the following:

C++ Syntax (Toggle Plain Text) 
  1. FixedSizeMatrix y(5,5);
  2. cout<<y;
  3. cout<<y;

The first cout works fine but the second ne gives me a segementation fault. Now I know a segmentation fault is a problem with memory and the cnstructors and destructors. I put a cout statement in my destructor and to my surprise I saw that directly after the first cout<<y; statement is executed the destructor is called.

Im completely lost as to why this is. Any suggestions?
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Re: C++ destructor problem

 
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  #2
Oct 4th, 2009
Show us your code.

Method operator<< should be,
C++ Syntax (Toggle Plain Text) 
  1. friend ostream &operator<<(ostream &out,const FixedSizeMatrix &ref){
  2.    .....        
  3.   return out;
  4. }
Failure is not fatal, but failure to change might be. - John Wooden
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Re: C++ destructor problem

 
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  #3
Oct 4th, 2009
C++ Syntax (Toggle Plain Text) 
  1. inline ostream& perator<<(ostream& os, FixedSizeMatrix obj)
  2. {
  3.  
  4. }
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Re: C++ destructor problem

 
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  #4
Oct 4th, 2009
Sorry bout that...

C++ Syntax (Toggle Plain Text) 
  1. inline ostream& operator << (ostream& os, FixedSizeMatrix obj)
  2. {
  3.    obj.print(os);
  4.    return os;
  5. }
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Re: C++ destructor problem

 
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  #5
Oct 4th, 2009
Try this. And inline won't do anything helpful by the way.

C++ Syntax (Toggle Plain Text) 
  1. ostream& operator << (ostream& os, FixedSizeMatrix& obj)
  2. {
  3.    obj.print(os);
  4.    return os;
  5. }
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