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util1: handle out-of-range times in timestring

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This commit is contained in:
Andrew Tridgell
2026-05-15 10:27:22 +10:00
parent 765d7446cc
commit cc84711567
1 changed files with 6 additions and 1 deletions
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7
util1.c
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@@ -1459,7 +1459,12 @@ char *timestring(time_t t)
static char buffers[4][20]; /* We support 4 simultaneous timestring results. */
char *TimeBuf = buffers[ndx = (ndx + 1) % 4];
struct tm tmp, *tm = localtime_r(&t, &tmp);
int len = snprintf(TimeBuf, sizeof buffers[0], "%4d/%02d/%02d %02d:%02d:%02d",
int len;
if (!tm) {
strlcpy(TimeBuf, "(time out of range)", sizeof buffers[0]);
return TimeBuf;
}
len = snprintf(TimeBuf, sizeof buffers[0], "%4d/%02d/%02d %02d:%02d:%02d",
(int)tm->tm_year + 1900, (int)tm->tm_mon + 1, (int)tm->tm_mday,
(int)tm->tm_hour, (int)tm->tm_min, (int)tm->tm_sec);
assert(len > 0); /* Silence gcc warning */