Andres Freund <andres@anarazel.de> writes:
> On 2017-03-14 19:34:12 -0400, Tom Lane wrote:
>> It seems bizarre that you chose to spell the new configure symbol as
>> HAVE__COMPUTED_GOTO rather than HAVE_COMPUTED_GOTO
> I went back-and-forth about this a number of times. We have a bunch of
> symbols defined with HAVE__ as a prefix (and some with HAVE_GCC__) - and
> more of the nearby code seems to use __ rather than _. I don't really
> know why we started doing that, but it's far from new..
> Any idea why we introduce __ stuff?
The nearby stuff is describing features that have a specific name that
includes a leading underscore or two, like __builtin_unreachable().
That doesn't seem to apply here, so I wouldn't add extra underscores.
regards, tom lane