Introduction

Some compilers (such as the SUN's Solaris for x86) complain with error messages similar to

Cannot cast from bitwise_enum<std::ios_base::open_mode> to int

This is because their STL's implementation of streams clashes with the declaration of the bitwise_enum class. Just place the bitwise_enum inside a namespace and you're done. See the example below.

Example

The following example (same as the one packed) encloses the bitwise_enum into a namespace named BE. (look for BE in this code, or the 'HERE!' comment).

#include <iostream>
using std::cout;

namespace BE {                                // HERE!
#include "bitwise_enums.hpp"
}

enum MasksSet1
{
    kZero     = 0,
    kOne      = 1,
    kTwo      = 2,
    kThree    = 4,
    kFour     = 8
};

typedef BE::bitwise_enum<MasksSet1> M1;      // HERE!

void show_bits(M1 b)
{
    if (b.has_bits(kZero))  cout << "kZero  turned on\n";
    if (b.has_bits(kOne))   cout << "kOne   turned on\n";
    if (b.has_bits(kTwo))   cout << "kTwo   turned on\n";
    if (b.has_bits(kThree)) cout << "kThree turned on\n";
    if (b.has_bits(kFour))  cout << "kFour  turned on\n";
}

int main()
{
    using namespace BE;                     // HERE!
    show_bits(kOne | kTwo);
   
    return 0;
}