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From bc1e7731cee963e422575f81048792f4d5db9641 Mon Sep 17 00:00:00 2001
From: Daniel Sabogal <dsabogal@ufl.edu>
Date: Wed, 2 Nov 2016 22:29:36 -0400
Subject: fix integer overflow of tm_year in __secs_to_tm
the overflow check for years+100 did not account for the extra
year computed from the remaining months. instead, perform this
check after obtaining the final number of years.
---
src/time/__secs_to_tm.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/src/time/__secs_to_tm.c b/src/time/__secs_to_tm.c
index 3a3123a..093d902 100644
--- a/src/time/__secs_to_tm.c
+++ b/src/time/__secs_to_tm.c
@@ -60,15 +60,16 @@ int __secs_to_tm(long long t, struct tm *tm)
for (months=0; days_in_month[months] <= remdays; months++)
remdays -= days_in_month[months];
+ if (months >= 10) {
+ months -= 12;
+ years++;
+ }
+
if (years+100 > INT_MAX || years+100 < INT_MIN)
return -1;
tm->tm_year = years + 100;
tm->tm_mon = months + 2;
- if (tm->tm_mon >= 12) {
- tm->tm_mon -=12;
- tm->tm_year++;
- }
tm->tm_mday = remdays + 1;
tm->tm_wday = wday;
tm->tm_yday = yday;
--
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