Re: [HACKERS] A misconception about the meaning of 'volatile' in GetNewTransactionId?

Thomas Munro <thomas.munro@enterprisedb.com> writes:
> I was reading xact.c and noticed this block:
> ...
> Isn't this insufficient on non-TSO systems like POWER and Arm?

Yeah, I think you're right.  That code probably predates our support
for memory barriers, so "volatile" was the best we could do at the
time --- but as you say, it doesn't fix hardware-level rearrangements.
        regards, tom lane