invalid sizeof error

[RIVOPICO]

I just got this error

/usr/include/boost/variant/get.hpp:178: error: invalid application of 'sizeof' to incomplete type 'boost::STATIC_ASSERTION_FAILURE<false>'
     BOOST_STATIC_ASSERT_MSG(
     ^

the code

// strict_get<U>(variant) methods
//
template <typename U, BOOST_VARIANT_ENUM_PARAMS(typename T) >
inline
    typename add_pointer<U>::type
strict_get(
      boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >* operand
      BOOST_VARIANT_AUX_GET_EXPLICIT_TEMPLATE_TYPE(U)
    ) BOOST_NOEXCEPT
{
    BOOST_STATIC_ASSERT_MSG(
        (boost::detail::variant::holds_element<boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >, U >::value),
        "boost::variant does not contain specified type U, "
        "call to boost::get<U>(boost::variant<T...>*) will always return NULL"
    );

    return relaxed_get<U>(operand);
}

Error is in line
BOOST STATIC MSG ADD.

[Pablo J. Rogina]

@RIVOPICO Hi, should you get better answers in Boost users list? Not sure how this apply to Qt framework

[VRonin]

The error doesn't come in from boost::variant but from how you use it. You should check the "referenced in" part of the error