The method to determine, if a pointer to a member function points to a virtual method or not, depends on the ABI. Please see also:
* http://infocenter.arm.com/help/topic/com.arm.doc.ihi0041e/IHI0041E_cppabi.pdf chapter 3.2
* https://blog.mozilla.org/nfroyd/2014/02/20/finding-addresses-of-virtual-functions/