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@ -166,8 +166,13 @@ inline int utc_minutes_offset(const std::tm& tm = details::os::localtime())
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#ifdef _WIN32
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#ifdef _WIN32
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(void)tm; // avoid unused param warning
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(void)tm; // avoid unused param warning
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#if _WIN32_WINNT < _WIN32_WINNT_WS08
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TIME_ZONE_INFORMATION tzinfo;
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auto rv = GetTimeZoneInformation(&tzinfo);
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#else
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DYNAMIC_TIME_ZONE_INFORMATION tzinfo;
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DYNAMIC_TIME_ZONE_INFORMATION tzinfo;
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auto rv = GetDynamicTimeZoneInformation(&tzinfo);
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auto rv = GetDynamicTimeZoneInformation(&tzinfo);
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#endif
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if (!rv)
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if (!rv)
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return -1;
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return -1;
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return -1 * (tzinfo.Bias + tzinfo.DaylightBias);
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return -1 * (tzinfo.Bias + tzinfo.DaylightBias);
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