------- Additional Comments From pcarlini at suse dot de 2005-05-03 09:29 ------- > I'm not sure what sort of help you are looking for. I thought > that I very clearly pointed out the problem, and the point in > the code where it occured.
Ok, my message was not clear. I'm looking for help about the *performance* issue, not the correctness issue. To your best knowledge all those users that avoid v3 basic_string for MT applications do that for performance or for correctness (wrt the Posix issue that you are pointing out in detail)?? Reading those papers that I mentioned before (+ another one on C/C++ Users Journal which exactly touches *your* issue) it's *not* at all clear that the latter is the main issue, in the general understanding. > It would help. But an implementation designed with reference > counting in mind is likely to be rather slow when reference > counting is turned off. IMHO, correct and slow is better than > the current situation, but not all compiler users agree. Indeed. Of course I'm talking about a *switch* (off by default) But, about the correctness point... > Most other implementations I'm aware of don't use std::string in > exceptions. That would seem to be the best solution. Ok, but I don't think we can also change that in the short term and not affecting the ABI, we are definitely going to do that in v7-branch and I would appreciate if you could advise about the best solution among all those proposed (see the thread). Returning to our issue, however, do you still believe that a switch turning off RC would be useful if we don't change the treatment of exceptions? I don't know, maybe we can have something simple for that within the present ABI, but I cannot make promises and want to have an idea of the amount of work. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21334