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Re: misc/49342: [test] lib/libc/gen/t_time.c is non-deterministic; compares set time vs current time (and can vary by a second under rare circumstances)
On Thu, Oct 30, 2014 at 10:05 PM, <yaneurabeya%gmail.com@localhost> wrote:
> The lib/libc/gen/t_time:time_timeofday testcase works in most cases, but
> if the clock rolls over between when time and gettimeofday are called, the value returned from time and the tv_sec value can vary between, as noted in one of our Kyua runs on FreeBSD:
> Test case: lib/libc/gen/t_time:time_timeofday
> The testcase should have "fuzzing" built in so it allows for a maximum of 1 second difference between the two compared values.
It could be worse than 1s, worst case, as this is not a monotonic
clock, and in either direction, in theory. Not a very good test, but I
suppose if we change to 10s wither way its fairly safe...
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