Default initialization of built-in types in VC++ 7.0

"Matthias Hofmann" <>
3 Aug 2006 11:37:30 -0400

I have thought that according to the standard, invoking a constructor on
built-in types would cause them to be initialized to 0 (see 8.5/5 and
8.5/7). However, this does not seem to work with dynamic allocation:

#include <iostream>
#include <memory>

using std::cout;
using std::endl;

int main()
    std::auto_ptr<int> p( new int() );

    // Gives random value.
    cout << *p << endl;

    // Gives 0 value.
    cout << int() << endl;

    return 0;

I assume that this is a bug in VC++ 7.0?

{ it is. it's been corrected, at least in VC 2005. any questions about
  the behavoiur of any particular compiler should be posted to the
  compiler newsgroup, here it's -mod }

Matthias Hofmann
Anvil-Soft, CEO - The Creators of Toilet Tycoon - Die Macher des Klomanagers

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