Merge branch 'nd/complete-config-vars'
[git] / compat / gmtime.c
1 #include "../git-compat-util.h"
2 #undef gmtime
3 #undef gmtime_r
4
5 struct tm *git_gmtime(const time_t *timep)
6 {
7         static struct tm result;
8         return git_gmtime_r(timep, &result);
9 }
10
11 struct tm *git_gmtime_r(const time_t *timep, struct tm *result)
12 {
13         struct tm *ret;
14
15         memset(result, 0, sizeof(*result));
16         ret = gmtime_r(timep, result);
17
18         /*
19          * Rather than NULL, FreeBSD gmtime simply leaves the "struct tm"
20          * untouched when it encounters overflow. Since "mday" cannot otherwise
21          * be zero, we can test this very quickly.
22          */
23         if (ret && !ret->tm_mday) {
24                 ret = NULL;
25                 errno = EOVERFLOW;
26         }
27
28         return ret;
29 }