| /* Test program from Paul Eggert and Tony Leneis. */ |
| |
| #include <limits.h> |
| #include <time.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| |
| static time_t time_t_max; |
| static time_t time_t_min; |
| |
| /* Values we'll use to set the TZ environment variable. */ |
| static const char *tz_strings[] = |
| { |
| (const char *) 0, "GMT0", "JST-9", |
| "EST+3EDT+2,M10.1.0/00:00:00,M2.3.0/00:00:00" |
| }; |
| #define N_STRINGS ((int) (sizeof (tz_strings) / sizeof (tz_strings[0]))) |
| |
| /* Fail if mktime fails to convert a date in the spring-forward gap. |
| Based on a problem report from Andreas Jaeger. */ |
| static void |
| spring_forward_gap (void) |
| { |
| /* glibc (up to about 1998-10-07) failed this test. */ |
| struct tm tm; |
| |
| /* Use the portable POSIX.1 specification "TZ=PST8PDT,M4.1.0,M10.5.0" |
| instead of "TZ=America/Vancouver" in order to detect the bug even |
| on systems that don't support the Olson extension, or don't have the |
| full zoneinfo tables installed. */ |
| setenv ("TZ", "PST8PDT,M4.1.0,M10.5.0", 1); |
| |
| tm.tm_year = 98; |
| tm.tm_mon = 3; |
| tm.tm_mday = 5; |
| tm.tm_hour = 2; |
| tm.tm_min = 0; |
| tm.tm_sec = 0; |
| tm.tm_isdst = -1; |
| if (mktime (&tm) == (time_t)-1) |
| exit (1); |
| } |
| |
| static void |
| mktime_test1 (time_t now) |
| { |
| struct tm *lt = localtime (&now); |
| if (lt && mktime (lt) != now) |
| exit (2); |
| } |
| |
| static void |
| mktime_test (time_t now) |
| { |
| mktime_test1 (now); |
| mktime_test1 ((time_t) (time_t_max - now)); |
| mktime_test1 ((time_t) (time_t_min + now)); |
| } |
| |
| static void |
| irix_6_4_bug (void) |
| { |
| /* Based on code from Ariel Faigon. */ |
| struct tm tm; |
| tm.tm_year = 96; |
| tm.tm_mon = 3; |
| tm.tm_mday = 0; |
| tm.tm_hour = 0; |
| tm.tm_min = 0; |
| tm.tm_sec = 0; |
| tm.tm_isdst = -1; |
| mktime (&tm); |
| if (tm.tm_mon != 2 || tm.tm_mday != 31) |
| exit (3); |
| } |
| |
| static void |
| bigtime_test (int j) |
| { |
| struct tm tm; |
| time_t now; |
| tm.tm_year = tm.tm_mon = tm.tm_mday = tm.tm_hour = tm.tm_min = tm.tm_sec = j; |
| tm.tm_isdst = -1; |
| now = mktime (&tm); |
| if (now != (time_t) -1) |
| { |
| struct tm *lt = localtime (&now); |
| if (! (lt |
| && lt->tm_year == tm.tm_year |
| && lt->tm_mon == tm.tm_mon |
| && lt->tm_mday == tm.tm_mday |
| && lt->tm_hour == tm.tm_hour |
| && lt->tm_min == tm.tm_min |
| && lt->tm_sec == tm.tm_sec |
| && lt->tm_yday == tm.tm_yday |
| && lt->tm_wday == tm.tm_wday |
| && ((lt->tm_isdst < 0 ? -1 : 0 < lt->tm_isdst) |
| == (tm.tm_isdst < 0 ? -1 : 0 < tm.tm_isdst)))) |
| exit (4); |
| } |
| } |
| |
| static int |
| do_test (void) |
| { |
| time_t t, delta; |
| int i; |
| unsigned int j; |
| |
| setenv ("TZ", "America/Sao_Paulo", 1); |
| /* This test makes some buggy mktime implementations loop. |
| Give up after 60 seconds; a mktime slower than that |
| isn't worth using anyway. */ |
| alarm (60); |
| |
| for (time_t_max = 1; 0 < time_t_max; time_t_max *= 2) |
| continue; |
| time_t_max--; |
| if ((time_t) -1 < 0) |
| for (time_t_min = -1; (time_t) (time_t_min * 2) < 0; time_t_min *= 2) |
| continue; |
| delta = time_t_max / 997; /* a suitable prime number */ |
| for (i = 0; i < N_STRINGS; i++) |
| { |
| if (tz_strings[i]) |
| setenv ("TZ", tz_strings[i], 1); |
| |
| for (t = 0; t <= time_t_max - delta; t += delta) |
| mktime_test (t); |
| mktime_test ((time_t) 1); |
| mktime_test ((time_t) (60 * 60)); |
| mktime_test ((time_t) (60 * 60 * 24)); |
| |
| for (j = 1; j <= INT_MAX; j *= 2) |
| bigtime_test (j); |
| bigtime_test (j - 1); |
| } |
| irix_6_4_bug (); |
| spring_forward_gap (); |
| return 0; |
| } |
| |
| #define TEST_FUNCTION do_test () |
| #include "../test-skeleton.c" |