Bug#103980: g++-3.0: copies constructors

[Daniel Jacobowitz <dan@debian.org>]

On Fri, Jul 13, 2001 at 10:05:29AM +0200, Laurent Bonnaud wrote:
> 
> Hi,
> 
> you write that "apparently", g++ 3.0 tries a longer conversion chain
> than 2.95.  Indeed, the compiler message let us think so.  But to
> verify this, I added traces into your testcase.  The result is that
> both g++ versions use the same conversion chain (and indeed g++ 3.0
> takes much longer to compile) :
> 
> $ ./a.out 
> non const aios->aiosout
> 
> So the only problem here seems to be the compilation speed.  Perhaps
> g++ 3.0 has to take into account more copy constructors for the
> conversion chain computation than g++ 2.95 in order to comply with more
> complex new C++ rules ?

The increased compilation time is actually due mostly to the greatly
modified C++ library - it's the #include <iostream> that takes longer.

-- 
Daniel Jacobowitz                           Carnegie Mellon University
MontaVista Software                         Debian GNU/Linux Developer