From 47f3da1cf49377c25772bb54d07db55225bbb142 Mon Sep 17 00:00:00 2001 From: Guillaume Bourcier Date: Tue, 11 Oct 2011 11:45:33 +0000 Subject: libc: fix daylight saving time handling The algorithm computing daylight saving time incorrectly adds a day for each month after January for leap years. The clock shift from/to DST can be delayed if the last Sunday of a transition month is exactly seven days before the first of the following month. This change adds a day for the February month only. Signed-off-by: Guillaume Bourcier Signed-off-by: Richard Braun Signed-off-by: Carmelo Amoroso --- (limited to 'libc/misc/time/time.c') diff --git a/libc/misc/time/time.c b/libc/misc/time/time.c index 19d68e1..8e2ebf1 100644 --- libc/misc/time/time.c +++ libc/misc/time/time.c @@ -707,7 +707,7 @@ static int tm_isdst(register const struct tm *__restrict ptm, ++day; } monlen = 31 + day_cor[r->month -1] - day_cor[r->month]; - if (isleap && (r->month > 1)) { + if (isleap && (r->month == 2)) { ++monlen; } /* Wweekday (0 is Sunday) of 1st of the month -- cgit v0.9.0.1-2-gef13