log: handle integer overflow in timestamps

diff --git a/cache.h b/cache.h
index bb71bf8a7f92bafb16699e7a53cd206042d0465a..9a2c377b73f1097ff426c64cf3002c98856c6dee 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -909,6 +909,7 @@ void datestamp(char *buf, int bufsize);
 unsigned long approxidate_careful(const char *, int *);
 unsigned long approxidate_relative(const char *date, const struct timeval *now);
 enum date_mode parse_date_format(const char *format);
+int date_overflows(unsigned long date);
 
 #define IDENT_STRICT          1
 #define IDENT_NO_DATE         2