<string> - warning messages

[Vadim Egorov]

Hello,

I see more problems here than that.
It looks like an attempt to check validity of the range [__beg, end).

_M_replace contains similar piece of code (bits/string.tcc:424):
	size_type __dist_new = static_cast<size_type>(distance(__j1, __j2));

In the case of negative distance in both cases it is converted to big
unsigned
value - in the first case by _Rep::_S_create(__range, __a) call.

If it is bigger than max_size() than length_error will be thrown,
otherwise we'll
have undefined behavior predicted in Standard.

I would like to know what is supposed to happen in such cases.
(e.g. 
	string s1("some text");
	string s2(s1.end(), s1.begin());
)


Vadim.

"Edwards, Phil" wrote:
> 
> + bits/string.tcc:119          // (__range > 0 ? __range : -1 * __range;)
> + warning: statement with no effect
>                                                                        ^
>                                                                        ^
> My guess is this semi right here --------------------------------------|
> inside the parens but I could easily be wrong.
> 


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Vadim Egorov, 1C      *       ÷ÁÄÉÍ åÇÏÒÏ×,1C
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