-----Original Message----- From: boost-bounces@lists.boost.org [mailto:boost-bounces@lists.boost.org] On Behalf Of me22 Sent: Monday, July 10, 2006 5:07 PM To: boost@lists.boost.org Subject: Re: [boost] Please don't define a fake "operator <" justfororderedcontainers

On 7/10/06, Sohail Somani <s.somani@fincad.com> wrote:

...

Isn't shared_ptr<T> is supposed to be like T* which has ordering? In this case, it's a non-issue no?

My understanding is that < is only well-defined for pointers into the same array and that < between to arbitrary pointers is otherwise some sort of UB.

It's less<T*> that provides a full ordering for arbitrary T*s. (By specialising std::less.)

This is true.