Re: [Boost-users] uint_t<bits>::value where bits is a template parameter fails to compile

From: Kobi Cohen-Arazi (kobi.cohenarazi_at_[hidden])
Date: 2006-07-07 12:08:05

typedef typename boost::uint_t<bits>::least t;

Will work.

Kobi.

On 7/7/06, Phil Endecott <spam_from_boost_users_at_[hidden]> wrote:
>
> Dear All,
>
> I am having trouble using the integer library.  The following fails
> to compile:
>
> #include <boost/integer.hpp>
>
> template <int bits>
> void fn(void)
> {
>   //typedef boost::uint_t<8>::least t;
>   typedef boost::uint_t<bits>::least t;
>   t var;
> }
>
>
> int main(int argc, char* argv)
> {
>   fn<8>();
> }
>
>
> With g++ 4.0.0 on Linux and Boost 1.32, I get:
>
> boost_int_test.cc: In function ‘void fn()’:
> boost_int_test.cc:7: error: expected initializer before ‘t’
> boost_int_test.cc:8: error: ‘t’ was not declared in this scope
> boost_int_test.cc:8: error: expected `;' before ‘var’
>
>
> The problem seems to occur when I use a template parameter - "bits"
> in this case - as the template parameter to uint_t.  If I use a
> constant (as in the commented-out line) it works.
>
> Is this a C++ feature, or a bug somewhere?  Can anyone suggest a
> workaround?
>
> Thanks,
>
> Phil.
>
>
>
>
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>
>

-- 
- Kobi