Undoc'd Feature?

[Albert Chan]

(07-09-2022 12:20 PM)RPNerd Wrote:  I would contend that the Microsoft compiler is wrong and the others are correct.

There is no right or wrong. With Undefined Behavior, Anything is Possible

Your reasoning suggested {a=a++;} ≡ {t=a; a++; a=t;}, with a unchanged.
But, another way to look at this: {a=a; a++;} will have a incremented.