auto_ptr problems

[Jack Reeves]

The following works and shouldn't

#include <memory>
struct Base {};
int main() {
    std::auto_ptr<Base> ptr;
    ptr = new Base;
}

the following doesn't and should

#include <memory>
struct Base {};
struct Derived : public Base {};

std::auto_ptr<Derived> foo() {
    return std::auto_ptr<Derived>(new Derived);
}

int main() {
    std::auto_ptr<Base> ptr;
    ptr = foo();
}

here is the fix for both

File: std/std_memory.h
124c124
<    auto_ptr_ref(_Tp1* __p) : _M_ptr(__p) {}
---
>    explicit auto_ptr_ref(_Tp1* __p) : _M_ptr(__p) {}
196c196
<     { return auto_ptr_ref<_Tp>(this->release()); }
---
>     { return auto_ptr_ref<_Tp1>(this->release()); }





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