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-rw-r--r--date.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/date.c b/date.c
index 68cdcaa3f6..3c981f7eb5 100644
--- a/date.c
+++ b/date.c
@@ -635,7 +635,7 @@ int parse_date_toffset(const char *date, unsigned long *timestamp, int *offset)
/* mktime uses local timezone */
*timestamp = tm_to_time_t(&tm);
if (*offset == -1)
- *offset = (*timestamp - mktime(&tm)) / 60;
+ *offset = ((time_t)*timestamp - mktime(&tm)) / 60;
if (*timestamp == -1)
return -1;