Re: composition and bad_alloc

"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
for info about ]
      [ comp.lang.c++.moderated.    First time posters: Do this! ]