[humbledrone]

This is the reason that you enable all of the compiler warnings that you possibly can, and treat them as errors. For instance I believe that gcc's -Wconversion would catch an implicit cast from a long to an int (and I'm sure there's a Visual C++ warning for the same problem).

There is simply no excuse to work with warnings like this disabled. If you come across a codebase that was built without such warnings, turn them on and have fun finding out about tons of bugs that could have been trivially avoided.