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-rw-r--r--date.c25
1 files changed, 22 insertions, 3 deletions
diff --git a/date.c b/date.c
index 83b416634..782de95d9 100644
--- a/date.c
+++ b/date.c
@@ -144,8 +144,8 @@ void show_date_relative(unsigned long time, int tz,
if (months) {
struct strbuf sb = STRBUF_INIT;
strbuf_addf(&sb, Q_("%lu year", "%lu years", years), years);
- /* TRANSLATORS: "%s" is "<n> years" */
strbuf_addf(timebuf,
+ /* TRANSLATORS: "%s" is "<n> years" */
Q_("%s, %lu month ago", "%s, %lu months ago", months),
sb.buf, months);
strbuf_release(&sb);
@@ -184,8 +184,10 @@ const char *show_date(unsigned long time, int tz, enum date_mode mode)
tz = local_tzoffset(time);
tm = time_to_tm(time, tz);
- if (!tm)
- return NULL;
+ if (!tm) {
+ tm = time_to_tm(0, 0);
+ tz = 0;
+ }
strbuf_reset(&timebuf);
if (mode == DATE_SHORT)
@@ -1113,3 +1115,20 @@ unsigned long approxidate_careful(const char *date, int *error_ret)
gettimeofday(&tv, NULL);
return approxidate_str(date, &tv, error_ret);
}
+
+int date_overflows(unsigned long t)
+{
+ time_t sys;
+
+ /* If we overflowed our unsigned long, that's bad... */
+ if (t == ULONG_MAX)
+ return 1;
+
+ /*
+ * ...but we also are going to feed the result to system
+ * functions that expect time_t, which is often "signed long".
+ * Make sure that we fit into time_t, as well.
+ */
+ sys = t;
+ return t != sys || (t < 1) != (sys < 1);
+}