Re: [PATCH] limit ranking change to C++0x

["Doug Gregor" <doug dot gregor at gmail dot com>]

On 7/20/07, Dirk Mueller <dmueller@suse.de> wrote:
> This is supposed to address PR 32756. The problem here is that the rvalue
> references introduced a ranking change that causes the testcase to fail.
>
> I'm not sure if this failure is correct under the C++0x rules, but under the
> old standard it is definitely wrong. Fixed by putting the relevant change
> into a if(cxx_dialect == cxx0x) block.

I believe the testcase should compile the same way under C++0x and
C++98, so deciding based on the C++ dialect isn't the right fix. I
suspect that our use of rvaluedness_matches_p in that section needs to
look at other parts of the conversion ranking to more narrowly apply
the lvalue/rvalue preference rule.

 - Doug