Re: stl_alloc substitution

[address@hidden]

On 9 Jun., 10:01, Bernd Strieder <strie...@informatik.uni-kl.de>
wrote:
> Hello,
>
>
>
> oliverp...@googlemail.com wrote:
> > Hello everybody,
>
> > I am trying to port some old gcc2 code to gcc-Version 4.0.3 (Ubuntu
> > 4.0.3-1ubuntu5).
> > When I try to "make" the compiler complains that
>
> > _Alloc_traits« is not a template.
>
> > After searching for a while i came to the conclusion that this
> > template is not more in gcc4,
> > the stl_alloc is obsolete and removed.
> > So how can I substitute templates such as
> > ==========================================
> >   template<typename _Tp, bool __threads, int __inst>
> >     struct _Alloc_traits<_Tp, MyAlloc_template<__threads, __inst> >
> >     {
> >       static const bool _S_instanceless = true;
> >       typedef __simple_alloc<_Tp, MyAlloc_template<__threads, __inst>
>
> > _Alloc_type;
> >       typedef __allocator<_Tp, MyAlloc_template<__threads, __inst> >
> > allocator_type;
> >     };
> > ==========================================
> > with gcc4 compatible code?
>
> At first I would try to omit all that old stuff and use the defaults
> everywhere. AFAIK names starting with underscore are not public, so it
> was not wise to use them in the first place. If then there are
> problems, e.g. performance problems, then I would reread the docs at
> libstdc++ on gcc.gnu.org on allocators. Possibly there are some
> features to support multithreaded apps.
>
> I have some doubt that that allocator code can be easily ported to gcc4.
> It possibly does access thread APIs which might have been improved
> somewhat and I think allocators had quite some differences in their
> semantics in gcc pre 3. Therefore better go back some steps and then
> reintroduce new things as necessary.
>
> Bernd Strieder

Thank you Bernd,

I am currently experimenting a bit with the STLPort libs. It includes
all the old templates. I will report back if I have luck with it.