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LibCore: Set tm_isdst to a negative value before invoking mktime
If it is default-initialized to 0, mktime will assume that DST is not in effect for the specified time. Setting it to a negative value instructs mktime to determine for itself whether DST is in effect.
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@ -280,7 +280,9 @@ Optional<DateTime> DateTime::parse(StringView format, DeprecatedString const& st
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{
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unsigned format_pos = 0;
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unsigned string_pos = 0;
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struct tm tm = {};
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tm.tm_isdst = -1;
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auto parsing_failed = false;
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auto tm_represents_utc_time = false;
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@ -549,4 +551,5 @@ Optional<DateTime> DateTime::parse(StringView format, DeprecatedString const& st
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return DateTime::from_timestamp(mktime(&tm));
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}
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}
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