Nine ways to break your systems code using volatile – Embedded in Academia

The volatile qualifier in C/C++ is a little bit like the C preprocessor: an ugly, blunt tool that is easy to misuse but that — in a very narrow set of circumstances — gets the job done. This article will first briefly explain volatile and its history and then, through a series of examples about how not to use it, explain how to most effectively create correct systems software using volatile. Alt

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Cのvolatileが導入された経緯、基本的にI/O以外では使えない理由、使って意図しない動作になる実際のコード