I've heard i++ isn't thread safe, is ++i thread-safe?

Question

I\'ve heard that i++ isn\'t a thread-safe statement since in assembly it reduces down to storing the original value as a temp somewhere, incrementing it, and then replacing

Answer 1

According to this assembly lesson on x86, you can atomically add a register to a memory location, so potentially your code may atomically execute '++i' ou 'i++'. But as said in another post, the C ansi does not apply atomicity to '++' opération, so you cannot be sure of what your compiler will generate.