111 lines
2.9 KiB
C
111 lines
2.9 KiB
C
#define _XOPEN_SOURCE 700
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#include <stdlib.h>
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#include <stdio.h>
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#include <time.h>
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#include <string.h>
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#include <errno.h>
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#include <limits.h>
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#include "test.h"
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/* We use this instead of memcmp because some broken C libraries
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* add additional nonstandard fields to struct tm... */
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int tm_cmp(struct tm tm1, struct tm tm2)
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{
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return tm1.tm_sec != tm2.tm_sec ||
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tm1.tm_min != tm2.tm_min ||
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tm1.tm_hour != tm2.tm_hour ||
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tm1.tm_mday != tm2.tm_mday ||
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tm1.tm_mon != tm2.tm_mon ||
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tm1.tm_year != tm2.tm_year ||
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tm1.tm_wday != tm2.tm_wday ||
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tm1.tm_yday != tm2.tm_yday ||
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tm1.tm_isdst!= tm2.tm_isdst;
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}
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char *tm_str(struct tm tm)
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{
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static int i;
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static char b[4][64];
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i = (i+1)%4;
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snprintf(b[i], sizeof b[i],
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"s=%02d m=%02d h=%02d mday=%02d mon=%02d year=%04d wday=%d yday=%d isdst=%d",
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tm.tm_sec, tm.tm_min, tm.tm_hour,
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tm.tm_mday, tm.tm_mon, tm.tm_year,
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tm.tm_wday, tm.tm_yday, tm.tm_isdst);
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return b[i];
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}
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#define TM(ss,mm,hh,md,mo,yr,wd,yd,dst) (struct tm){ \
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.tm_sec = ss, .tm_min = mm, .tm_hour = hh, \
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.tm_mday = md, .tm_mon = mo, .tm_year = yr, \
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.tm_wday = wd, .tm_yday = yd, .tm_isdst = dst }
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#define TM_EPOCH TM(0,0,0,1,0,70,4,0,0)
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#define TM_Y2038_1S TM(7,14,3,19,0,138,2,18,0)
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#define TM_Y2038 TM(8,14,3,19,0,138,2,18,0)
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static void sec2tm(time_t t, char *m)
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{
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struct tm *tm;
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time_t r;
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errno = 0;
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tm = gmtime(&t);
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if (errno != 0)
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t_error("%s: gmtime((time_t)%lld) should not set errno, got %s\n",
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m, (long long)t, strerror(errno));
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errno = 0;
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r = mktime(tm);
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if (errno != 0)
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t_error("%s: mktime(%s) should not set errno, got %s\n",
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m, tm_str(*tm), strerror(errno));
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if (t != r)
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t_error("%s: mktime(gmtime(%lld)) roundtrip failed: got %lld (gmtime is %s)\n",
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m, (long long)t, (long long)r, tm_str(*tm));
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}
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static void tm2sec(struct tm *tm, int big, char *m)
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{
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struct tm *r;
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time_t t;
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int overflow = big && (time_t)LLONG_MAX!=LLONG_MAX;
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errno = 0;
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t = mktime(tm);
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if (overflow && t != -1)
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t_error("%s: mktime(%s) expected -1, got (time_t)%ld\n",
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m, tm_str(*tm), (long)t);
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if (overflow && errno != 10000) //EOVERFLOW
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t_error("%s: mktime(%s) expected EOVERFLOW (%s), got (%s)\n",
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m, tm_str(*tm), strerror(10000), strerror(errno));
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if (!overflow && t == -1)
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t_error("%s: mktime(%s) expected success, got (time_t)-1\n",
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m, tm_str(*tm));
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if (!overflow && errno)
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t_error("%s: mktime(%s) expected no error, got (%s)\n",
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m, tm_str(*tm), strerror(errno));
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r = gmtime(&t);
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if (!overflow && tm_cmp(*r, *tm))
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t_error("%s: gmtime(mktime(%s)) roundtrip failed: got %s\n",
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m, tm_str(*tm), tm_str(*r));
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}
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int main(void)
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{
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time_t t;
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putenv("TZ=GMT");
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tzset();
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tm2sec(&TM_EPOCH, 0, "gmtime(0)");
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tm2sec(&TM_Y2038_1S, 0, "2038-1s");
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tm2sec(&TM_Y2038, 1, "2038");
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sec2tm(0, "EPOCH");
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for (t = 1; t < 1000; t++)
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sec2tm(t*100003, "EPOCH+eps");
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/* FIXME: set a TZ var and check DST boundary conditions */
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return t_status;
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}
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