[PATCH] time: Use CLOCK_REALTIME for time (BZ #30200)

[Paul Eggert]

On 3/8/23 00:59, Florian Weimer wrote:
> Even if the same underlying clock is used, rounding may cause interface
> which use different precision for the fractional seconds part to report
> different integral seconds.  The standard does not require rounding
> towards minus infinity.
Actually, POSIX does require rounding timestamps towards minus infinity 
for file timestamps, in its spec for utimensat. This requirement was put 
in because some implementations played fast and loose with these 
timestamps, with some rounding up and some rounding down, and this 
confusion caused more trouble than it was worth.

Perhaps it would help if POSIX had a similar requirement for the 'time' 
function, as my impression from this discussion is that the confusion 
with 'time' being out-of-sync with CLOCK_REALTIME is also more trouble 
than it's worth.

Anyway, thanks for clarifying what Glibc does.