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URL: http://github.com/gitgitgadget/git/pull/1986/files

"https://github.githubassets.com/assets/primer-primitives-6da842159062d25e.css" /> fix leap year calculation and remove now-unnecessary timestamp limit by lilyanatia · Pull Request #1986 · gitgitgadget/git · GitHub
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fix leap year calculation and remove now-unnecessary timestamp limit #1986

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fix leap year calculation and remove now-unnecessary timestamp limit #1986

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31ff86e
fix leap year calculation and remove now-unnecessary timestamp limit
lilyanatia Oct 10, 2025
ff6d4f7
fix whitespace
lilyanatia Oct 10, 2025
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9 changes: 5 additions & 4 deletions date.c
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,7 @@ time_t tm_to_time_t(const struct tm *tm)
int month = tm->tm_mon;
int day = tm->tm_mday;

if (year < 0 || year > 129) /* algo only works for 1970-2099 */
if (year < 0) /* algo only works for 1970+ */
return -1;
if (month < 0 || month > 11) /* array bounds */
return -1;
Expand All @@ -33,6 +33,7 @@ time_t tm_to_time_t(const struct tm *tm)
if (tm->tm_hour < 0 || tm->tm_min < 0 || tm->tm_sec < 0)
return -1;
return (year * 365 + (year + 1) / 4 + mdays[month] + day) * 24*60*60UL +
(year + 369) / 400 - (year + 69) / 100 +
tm->tm_hour * 60*60 + tm->tm_min * 60 + tm->tm_sec;
}

Expand Down Expand Up @@ -526,7 +527,7 @@ static int set_date(int year, int month, int day, struct tm *now_tm, time_t now,
return 1;
r->tm_year = now_tm->tm_year;
}
else if (year >= 1970 && year < 2100)
else if (year >= 1970)
r->tm_year = year - 1900;
else if (year > 70 && year < 100)
r->tm_year = year;
Expand Down Expand Up @@ -871,8 +872,8 @@ static int match_object_header_date(const char *date, timestamp_t *timestamp, in
}


/* timestamp of 2099-12-31T23:59:59Z, including 32 leap days */
static const timestamp_t timestamp_max = (((timestamp_t)2100 - 1970) * 365 + 32) * 24 * 60 * 60 - 1;
/* timestamp of max time */
static const timestamp_t timestamp_max = UINTMAX_MAX;

/* Gr. strptime is crap for this; it doesn't have a way to require RFC2822
(i.e. English) day/month names, and it doesn't work correctly with %z. */
Expand Down
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