Re: [Boost-users] [array] VC++ 7.1 bug and a proposed fix

From: Stephan Tolksdorf (andorxor_at_[hidden])
Date: 2006-07-26 05:01:22

> Another part of this thread mentioned assignment operator templates.  Please
> remember that C++ does not consider such templates when determining if an
> automatically-defined copying assignment operator is needed.  Such an
> operator is always a non-template, even if there's a operator template with
> a pattern that could match.  If automatically-defined copying assignment
> operator won't do what the assignment operator template would, then you must
> manually recreate the routine with an explicitly-defined non-template
> copying assignment operator.  (A similar rule exists for the copy
> constructor, such that it won't consider possibly-matching constructor
> templates.)

The situation with regard to template assignment operators and template 
constructors is more subtle than many people think. In certain 
situations they _will_ be used for copies, even in the presence of 
implicitly defined default functions.
Have a look at (especially the postings from kanze):
http://groups.google.com/group/comp.lang.c++.moderated/browse_thread/thread/eca7b43d751008cd/90cc0b4441afb64e

Regards,
   Stephan