Re: A Sample auto_ptr implementation

From:

Hendrik Schober <spamtrap@gmx.de>

Newsgroups:

comp.lang.c++

Date:

Mon, 20 Oct 2008 20:26:37 +0200

Message-ID:

<gdinqr$atg$4@hoshi.visyn.net>

Barry wrote:

On Oct 17, 6:16 pm, Hendrik Schober <spamt...@gmx.de> wrote:

Barry wrote:

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

Barry wrote:

[...]

#include <memory>
int main()
{
std::auto_ptr<int> p1 = new int(10); // this shouldn't work
std::auto_ptr<int> p2(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<>'.