Re: [Mingw-users] set iterators are const always

[Greg Chicares <gchicares@xxxxxxxxxxxxx>]

[reformatted--please wrap lines to a width of about seventy]

On 2008-02-06 16:09Z, Matthias Böhm wrote:
> I'm using mingw 5.1.3, gcc 3.4.5 and with the following file,
> i get compiling errors which do not occur with other compilers:

Which other compilers, and which STL implementations do they use?
Many other implementations are more lax. See below for a compiler
that's trustworthy (though I'm not sure which STL it's using).

>  set<X, less_X>::iterator it;
> 
>  for(it = xset.begin(); it != xset.end(); it++) {
>   it->do_something_non_const();  // produces compiler error
>  }
[...]
> In mingw, that won't compile, because the compiler complains
> that the object the iterator is pointing to is constant:

http://www.comeaucomputing.com/tryitout/

 error: the object has cv-qualifiers that are not
          compatible with the member function
            object type is: const X
    it->do_something_non_const();  // produces compiler error
    ^

> But i'm using iterator, not const_iterator!!!

Yet you're using std::set, so iterators aren't modifiable:

http://groups.google.com/group/comp.lang.c++.moderated/msg/c2440d4029121ccf

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