diff options
| -rw-r--r-- | time.c | 13 |
1 files changed, 11 insertions, 2 deletions
@@ -21,9 +21,15 @@ #include <stdlib.h> #include <time.h> +/** Whether tzset() has been called. */ +static bool tz_is_set = false; + int xlocaltime(const time_t *timep, struct tm *result) { // Should be called before localtime_r() according to POSIX.1-2004 - tzset(); + if (!tz_is_set) { + tzset(); + tz_is_set = true; + } if (localtime_r(timep, result)) { return 0; @@ -34,7 +40,10 @@ int xlocaltime(const time_t *timep, struct tm *result) { int xgmtime(const time_t *timep, struct tm *result) { // Should be called before gmtime_r() according to POSIX.1-2004 - tzset(); + if (!tz_is_set) { + tzset(); + tz_is_set = true; + } if (gmtime_r(timep, result)) { return 0; |