Piotr Sarna 05ec95134a clocks-impl: switch to thread-safe time conversion ...

std::gmtime() has a sad property of using a global static buffer
for returning its value. This is not thread-safe, so its usage
is replaced with gmtime_r, which can accept a local buffer.
While no regressions where observed in this particular area of code,
a similar bug caused failures in alternator, so it's better to simply
replace all std::gmtime calls with their thread-safe counterpart.

Message-Id: <39e91c74de95f8313e6bb0b12114bf12c0e79519.1588589151.git.sarna@scylladb.com>

2020-05-04 14:11:38 +03:00

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