Re: [Boost-users] [variant] 'which' out of range assertion

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You can get around this by increasing the maximum size a variant can handle, define the following symbols (or higher if you need):

#define BOOST_MPL_LIMIT_LIST_SIZE 30 #define BOOST_MPL_LIMIT_VECTOR_SIZE 30 #define BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS

And one more question: if I define these macros in some TU of my project, in the way that affects some other boost headers I include -- should I define them when building boost as well?