A Sample auto_ptr implementation

[Hendrik Schober]

Re: A Sample auto_ptr implementation

Barry wrote:

On Oct 17, 6:16 pm, Hendrik Schober <spamt...@gmx.d ewrote:

>Barry wrote:

>>On Oct 15, 11:22 pm, Hendrik Schober <spamt...@gmx.d ewrote:
>>>Barry wrote:

[...]

>>#include <memory>
>>int main()
>>{
>> std::auto_ptr<i ntp1 = new int(10); // this shouldn't work
>> std::auto_ptr<i ntp2(new int(10)); // should be like this!
>>}
>>[...]

> It doesn't seem to be a compielr bug, though, as a simple
> test with my own class makes the first line fail.

>
Maybe some Serive Package fix this.
I tried the code on Dinkumware

http://www.dinkumware.com/exam/default.aspx

it fails too.

Um, I think I've been unclear. The first line compiles with
'std::auto_ptr< >' but this fails:

class test {
public:
explicit test(void*) {}
};

int main()
{
´ test t1 = new int; // fails
test t2(new int); // compiles
return 0;
}


So it's probably not a problem of the compiler, but of the
std lib implementation that came with it.

Best Regards
Barry

Schobi

P.S.: BTW, never put pointers to arrays into 'std::auto_ptr< >'.

[Barry]

Re: A Sample auto_ptr implementation

On Oct 21, 2:26 am, Hendrik Schober <spamt...@gmx.d ewrote:

Barry wrote:

On Oct 17, 6:16 pm, Hendrik Schober <spamt...@gmx.d ewrote:

Barry wrote:
>On Oct 15, 11:22 pm, Hendrik Schober <spamt...@gmx.d ewrote:
>>Barry wrote:

[...]

>#include <memory>
>int main()
>{
>    std::auto_ptr<i ntp1 = new int(10); // this shouldn't work
>    std::auto_ptr<i ntp2(new int(10));  // should be like this!
>}
>[...]
  It doesn't seem to be a compielr bug, though, as a simple
  test with my own class makes the first line fail.

>

Maybe some Serive Package fix this.
I tried the code on Dinkumware

http://www.dinkumware.com/exam/default.aspx

it fails too.

>
  Um, I think I've been unclear. The first line compiles with
  'std::auto_ptr< >' but this fails:
>
    class test {
    public:
      explicit test(void*) {}
    };
>
    int main()
    {
´    test t1 = new int; // fails
      test t2(new int);  // compiles
      return 0;
    }
>
  So it's probably not a problem of the compiler, but of the
  std lib implementation that came with it.

yes, it only comes specially with auto_ptr

>

Best Regards
Barry

>
  Schobi
>
  P.S.: BTW, never put pointers to arrays into 'std::auto_ptr< >'.

I think you were confused the syntax of "new int(10)" with "new
int[10]"
it mean "new an integer with initial value 10"
--
Best Regards
Barry

[Hendrik Schober]

Re: A Sample auto_ptr implementation

Barry wrote:

[...]

> P.S.: BTW, never put pointers to arrays into 'std::auto_ptr< >'.

>
I think you were confused the syntax of "new int(10)" with "new
int[10]"
it mean "new an integer with initial value 10"

Yes, I was. Sorry for that brainfart.

Barry

Schobi