Re: Assignment operator=/copy constructor/temporaries, BROKEN!

Pete Becker <>
Fri, 17 Sep 2010 14:45:03 -0400
On 2010-09-17 14:32:06 -0400, Fabrizio J Bonsignore said:

I want this to be compilable and working AS IS:

If it doesn't work and you keep it AS IS, it will continue not to work.
So presumably AS IS means something less than AS IS.

class AO
       int i;
void Aha();// {i=1;}

AO &operator=(AO &x);// {i=x.i; return *this;}//should not matter if
inline or not

AO();// : i(0) {}
AO(AO &x);// {i=x.i;}
virtual ~AO();// {}

void AO::Aha() {

: i(0) {
AO::AO(AO &x) {

This is usually a mistake; copy constructors should take their argument
by const&, not by non-const&, except in very unusual circumstances.

AO &AO::operator=(AO &x) {

Same here: the argument should almost certainly be const&, not plain &.

         return *this;

Don't know if that helps. I haven't waded through all the
similar-looking code to try to figure out what error, if any, you're

Roundhouse Consulting, Ltd. ( Author of "The
Standard C++ Library Extensions: a Tutorial and Reference

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