I have function readXml( int& var, XMLNode *node ) and variable enum Mode { On, Off, Auto }; Mode mode;.

I want to read this like readXml( (int&) mode, node1 ); but compiler says

error: dereferencing type-punned pointer will break strict-aliasing rules [-Werror=strict-aliasing]

Of course, I can write something like:

int t;
readXml(t, node);
mode = static_cast<Mode>(t);

How can I fix this code in one-line.