undefined_behavior.cpp

/*
 * References:
 *
 *   [davmac20180820] Wrap on integer overflow is not a good idea
 *     https://davmac.wordpress.com/2018/08/20/wrap-on-integer-overflow-is-not-a-good-idea/
 *
 *   [wellons20180720] The Value of Undefined Behavior
 *     https://nullprogram.com/blog/2018/07/20/
 *
 *   [walfridsson20170904] Why undefined behavior may call a never-called function
 *     https://kristerw.blogspot.be/2017/09/why-undefined-behavior-may-call-never.html
 *
 *   [nayuki20170203] Undefined behavior in C and C++ programs
 *     https://www.nayuki.io/page/undefined-behavior-in-c-and-cplusplus-programs
 *
 */