The volatile Keyword

Proposal

The abstract in the proposal P1152R0 gives a short description of the changes that volatile undergoes:

“The proposed deprecation preserves the useful parts of volatile and removes the dubious / already broken ones. This paper aims at breaking at compile-time code which is today subtly broken at run time or through a compiler update.”

Before I dive into volatile, I want to answer the crucial question: When should you use volatile? A note from the C++ standard says that “volatile is a hint to the implementation to avoid aggressive optimization involving the object because the value of the object might be changed by ...