Re: [Boost-users] shared_ptr without rtti

From: Peter Dimov (pdimov_at_[hidden])
Date: 2006-09-14 16:43:47

Michael Marcin wrote:
> "Michael Marcin" <mmarcin_at_[hidden]> wrote in message
> news:ee7ljj$9o4$1_at_sea.gmane.org...
>> Using WinARM version 20060606 (gcc 4.1.1) compiling with -fno-rtti
>> gives: 1>..\..\sdk\boost\inc/boost/detail/sp_counted_impl.hpp: In member
>> function 'virtual void* boost::detail::sp_counted_impl_pd<P,
>> D>::get_deleter(const std::type_info&)':
>> 1>..\..\sdk\boost\inc/boost/detail/sp_counted_impl.hpp(150):  error:
>> cannot use typeid with -fno-rtti
>> 1>..\..\sdk\boost\inc/boost/detail/sp_counted_impl.hpp: In member
>> function 'virtual void* boost::detail::sp_counted_impl_pda<P, D,
>>>>> get_deleter(const std::type_info&)':
>> 1>..\..\sdk\boost\inc/boost/detail/sp_counted_impl.hpp(220):  error:
>> cannot use typeid with -fno-rtti
>> 1>..\..\sdk\boost\inc/boost/shared_ptr.hpp: In function 'D*
>> boost::get_deleter(const boost::shared_ptr<U>&)':
>> 1>..\..\sdk\boost\inc/boost/shared_ptr.hpp(540):  error: cannot use
>> typeid with -fno-rtti
>>
>> I thought typeid can work at compile-time without rtti (seems to for
>> msvc8) but I guess not.
>>
>> Any ideas?
>
> So I take it there is no flags for gcc to enable compile-time rtti
> only and there
> are no other ways around the typeid error in shared_ptr's
> implementation.

If you don't need to use get_deleter, just patch your local copy to 'return 
0' from the three functions.