Re: [boost] Problems with MPL in Fusion on MSVC 6.5

6 Aug 2004


      Peder Holt writes:
...
Hi. I am porting Fusion, Joel de Guzmans new tuple library to MSVC 6.5
and VC 7.0.
Several of  the testcases ICEs on MSVC 6.5. 
I traced the problems back to integral_c's operator int()
Problem:
When the template expressions gets too complicated, MSVC is unable to
handle inlined functions inside a type computer struct.
Solution:
Place the function body outside of the struct.
The relevant lines:
    operator AUX_WRAPPER_VALUE_TYPE() const
#if BOOST_WORKAROUND(BOOST_MSVC,==1200)
    ;
#else
    {
        return static_cast<AUX_WRAPPER_VALUE_TYPE>(this->value); 
    } 
#endif
};
#if BOOST_WORKAROUND(BOOST_MSVC,==1200)
template< AUX_WRAPPER_PARAMS(N) >
AUX_WRAPPER_INST(N)::operator AUX_WRAPPER_VALUE_TYPE() const
{
    return static_cast<AUX_WRAPPER_VALUE_TYPE>(this->value); 
} 
#endif
This change fixed most of the remaining (known) issues with 
Fusion & MSVC
Is it OK if I check in these changes?
If it doesn't break "libs/mpl/test/int.cpp" and "libs/mpl/test/for_each.cpp"
tests, go ahead.

--
Aleksey Gurtovoy
MetaCommunications Engineering