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Programming > C++ Moderated > Re: composition...
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Re: composition and bad_alloc

by "Antoon" <the-dot-Wizard-at-theJuker-dot-org@[EMAIL PROTECTED] Apr 17, 2008 at 03:57 AM

"mpho" <tjabane@[EMAIL PROTECTED]
> schreef in bericht
news:bba322e0-ab00-491b-b15e-fc949b52115f@[EMAIL PROTECTED]
> Hi all,
>
> This seems straightforward but gives this runtime error: terminate
> called after throwing an instance of 'std::bad_alloc' , what() :
> std9bad_alloc . I have:
>
> class X {
>      int sz;

sz can be negative: it's better to use size_t instead.

>      T *ptr;
>
>   public:
>             X(int s, T *p) : sz(s), ptr(new T[s])
>             {
>               assert(ptr != NULL);
>                for (int i = 0, i < sz; i++)
>                   ptr[i] = p[i];
>             }
>
>             //other members
>
>             ~X() {  delete ptr;  ptr = NULL;  }
                             ^^^^^^^
This should be delete [] ptr;


>  };
>
>  class Y {
>               X xobj
                             ^
Missing ;

>
>     public:
>                Y(int s, T *p) : xobj(s, p) {  } //OK?
>                 //other members
>                 ~Y() { } //OK?
>  };
>
> then
>
> int main(){
>
>  ar[10] = {ten values};
>  Y yobj(10, ar); //problem here(?)
> ......
> .....
> }
>
> What's the problem above?
> Thank you.
>


Antoon


-- 
      [ See http://www.gotw.ca/resources/clcm.htm
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 12 Posts in Topic:
composition and bad_alloc
mpho <tjabane@[EMAIL P  2008-04-16 15:43:28 
Re: composition and bad_alloc
Michael Aaron Safyan <  2008-04-17 03:48:15 
Re: composition and bad_alloc
Geert-Jan Giezeman <ge  2008-04-17 03:58:39 
Re: composition and bad_alloc
"Antoon" <th  2008-04-17 03:57:37 
Re: composition and bad_alloc
acehreli@[EMAIL PROTECTED  2008-04-17 03:52:21 
Re: composition and bad_alloc
=?ISO-8859-1?Q?Daniel_Kr=  2008-04-17 03:56:57 
Re: composition and bad_alloc
Gerhard Menzl <clcppm-  2008-04-17 03:59:03 
Re: composition and bad_alloc
Mathias Gaunard <loufo  2008-04-17 03:56:11 
Re: composition and bad_alloc
Chris Uzdavinis <cuzda  2008-04-17 04:13:13 
Re: composition and bad_alloc
mpho <tjabane@[EMAIL P  2008-04-18 06:13:19 
Re: composition and bad_alloc
acehreli@[EMAIL PROTECTED  2008-04-18 15:01:27 
Re: composition and bad_alloc
=?ISO-8859-1?Q?Daniel_Kr=  2008-04-18 15:01:06 

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tan12V112 Sat Jul 26 2:54:35 CDT 2008.