Re: [boost] [assign][range][ptr_container] using-induced problem

From: Jonathan Wakely (cow_at_[hidden])
Date: 2005-05-31 04:45:59

On Tue, May 31, 2005 at 08:36:41AM +0200, Joaqu?n M? L?pez Mu?oz wrote:

> Martin Wille posted about this a couple of days ago
> (http://lists.boost.org/boost-testing/2005/05/1216.php), but I'm afraid
> it could have passed unnoticed.
> 
> Some tests from Boost.(Assign|Range|PointerContainer) have
> the following layout
> 
> #include<...>
> 
> using namespace std;
> using namespace boost;
> 
> ...
> 
> #include <boost/test/unit_test.hpp>
> 
> 
> having the using directives before boost/test/unit_test.hpp is AFAICS
> illegal
> and does indeed cause problems with GCC 3.4.x and GCC 4.x, see
> for instance http://tinyurl.com/8payc

That's a libstdc+ bug which has been fixed in GCC's CVS.
(The problem is revealed because of the using directives before the
header, which are legal, but can be dangerous)

> I cannot test it, but I guess it suffices to move all the includes
> before
> any using directive. This will probably clear up dozens of tests,
> including
> some toolsets that are currently marked as unusable.

jon