[boost] random and msvc6

From: Lapshin, Kirill (Kirill.Lapshin_at_[hidden])
Date: 2003-03-24 15:58:42

Hi All,

 

I was reporting recently that random does not compile on msvc 6; I've seen
another report on the list that it does not work on intel c 7 as well.

The fact that released random library fails to work on these very popular
compilers is rather sad. I did some investigation and nailed down the
problem to following simple example:

 

template <class U, class T>

class Works

{

            BOOST_STATIC_ASSERT(!std::numeric_limits<U>::is_integer);

};

 

template <class U, class T>

class Fails

{

            BOOST_STATIC_ASSERT(!std::numeric_limits<T>::is_integer);

};

 

The interesting part that it fails to compile even when there is no
instantiation of the template.

 

In random library this assertion is within #ifndef
BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS #endif directives.

 

I did a quick search through boost sources and found somewhat similar code
in numeric_traits.hpp, however not a single trick borrowed from there seemed
to work in this case. Should we just disable the assertion for this
particular compiler? Replacing #ifndef
BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS with #if
!defined(BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS) && !(defined(BOOST_MSVC) &&
BOOST_MSVC <= 1300) will solve the compile error. Is this trttd? If there
are no objections, I can make this changes and send patches to someone
willing to apply it to CVS.

 

Thorsten, was the error you observed on intel 7 related to this one?

__________

Kirill Lapshin