Problem with BOOST_STATIC_ASSERT

From: Randy Bowen (rbowen_at_[hidden])
Date: 2003-01-07 16:40:29

I'm in the process of updating some applications from use of Boost
1.28.0 to 1.29.0, using MSVC7.  I've noticed that a number of static
assertions that used to compile now generate errors.  The assertions all
use is_integral to perform a type validation - e.g.:

        BOOST_STATIC_ASSERT(::boost::is_integral<value_type>::value);

This produces an error of the form:

c:\Perforce\Development\Web\cppinclude\domestic\Application
Framework\State Machine Engine\StringSerializer.h(145) : error C2027:
use of undefined type 'boost::STATIC_ASSERTION_FAILURE<x>'
        with
        [
            x=false
        ]
        c:\Perforce\Development\Web\cppinclude\domestic\Application
Framework\State Machine Engine\StringSerializer.h(143) : see reference
to class template instantiation
'sme::StringSerializer<_StringType,>::StringWriter<<template
parameter>>' being compiled
        c:\Perforce\Development\Web\cppinclude\domestic\Application
Framework\State Machine Engine\StringSerializer.h(169) : see reference
to class template instantiation 'sme::StringSerializer<_StringType,>'
being compiled

I believe that the data type is integral, and is complete at compile
time.  Any known reason why this would happen?

Randy Bowen