Re: Fix overflow in justify_interval related functions

On Mon, Feb 14, 2022 at 08:35:43PM -0500, Joseph Koshakow wrote:
> Good catch, I didn't think about that. Though if you are pre-justifying
> the days, then I don't think it's possible for the second addition to
> days to overflow. The maximum amount the days field could be after
> the first justification is 29. I think we can simplify it further to the
> attached patch.

LGTM.  I've marked this one as ready-for-committer.  It's a little weird
that justify_hours() and justify_days() can overflow in cases where there
is still a valid interval representation, but as Tom noted, those functions
have specific charters to follow.

> +		ereport(ERROR,
> +				(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
> +				errmsg("interval out of range")));

nitpick: I think there is ordinarily an extra space before errmsg() so that
it lines up with errcode().

-- 
Nathan Bossart
Amazon Web Services: https://aws.amazon.com