[issue29063] Fixed timemodule compile warnings.

[STINNER Victor]

STINNER Victor added the comment:

Not checking for integer overflow is more likely to hide bugs. Handling time is an hard problem, see a recent funny (or not) story from Cloudfare with the latest leap second added at midnight the 2016-12-31:
https://blog.cloudflare.com/how-and-why-the-leap-second-affected-cloudflare-dns/

Extract: "RRDNS is written in Go and uses Go’s time.Now() function to get the time. Unfortunately, this function does not guarantee monotonicity. Go currently doesn’t offer a monotonic time source (see issue 12914 for discussion)."

Hopefully, Python has time.monotonic() since Python 3.3 ;-)

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29063>
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