dynamic_bitset compiler issue

[anonymous]

dynamic_bitset does not compile with int64 on Visual Studio 9. THink culprit is code below

const size_type extra_bits = count_extra_bits();

This should be

const block_width_type extra_bits = count_extra_bits();

[Steven Watanabe]

Of course, you have to use an unsigned type. With that the code does compile, although it emits a warning. The warning is harmless in this case, although it would be better to fix it as you suggest.

#include <boost/dynamic_bitset/dynamic_bitset.hpp>

int main() {
    boost::dynamic_bitset<unsigned long long> bitset_type;
    bitset_type.resize(10, false);
}

boost/dynamic_bitset/dynamic_bitset.hpp(673) : warning C4244: 'initializing' : conversion from 'unsigned __int64' to 'const boost::dynamic_bitset<Block>::size_type', possible loss of data
        with
        [
            Block=unsigned __int64
        ]
        boost/dynamic_bitset/dynamic_bitset.hpp(649) : while compiling class template member function 'void boost::dynamic_bitset<Block>::resize(boost::dynamic_bitset<Block>::size_type,bool)'
        with
        [
            Block=unsigned __int64
        ]
        .\scratch.cpp(4) : see reference to class template instantiation 'boost::dynamic_bitset<Block>' being compiled
        with
        [
            Block=unsigned __int64
        ]

[Steven Watanabe]

(In [62898]) Use the correct variable type to save the result of count_extra_bits(). Fixes #4022.