debug safe iterator patch

[François Dumont]

Attached patch applied

2012-02-06  François Dumont <fdumont@gcc.gnu.org>

         * include/debug/safe_iterator.h
         (_Safe_iterator::_M_before_dereferenceable): Avoid the expensive
         creation of a _Safe_iterator instance to do the check.

François

On 02/05/2012 06:30 PM, Paolo Carlini wrote:
> On 02/05/2012 06:29 PM, François Dumont wrote:
>> Hi
>>
>>     Here is a small performance patch for the debug mode. Nothing 
>> urgent, just tell me if I can apply it on trunk at the moment.
> It impacts only debug-mode, thus it's pretty safe. If you tested it 
> check-debug I guess you can commit it to mainline even now.
>
> Thanks,
> Paolo.
>

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