e507cc5673
2004-10-27 Derek R. Price <derek@ximbiot.com> [BZ #487] This change is imported from gnulib. * time/mktime.c (not_equal_tm) [DEBUG]: Remove redundant check. 2004-10-24 Paul Eggert <eggert@cs.ucla.edu> [BZ #473] * time/tst-mktime.c (main): Don't assume that mktime fails when given time stamps before 1970. It returns negative time_t values instead, for compatibility with BSD. * time/tst-mktime2.c: New file. * time/Makefile (tests): Add it. [BZ #473] Import from gnulib. Revamp to avoid several problems near time_t extrema, and on hosts with 64-bit time_t and 32-bit int. This fixes Debian bug 177940. * time/mktime.c (TIME_T_MIDPOINT): New macro. (ydhms_diff): Renamed from ydhms_tm_diff, with a new signature, which avoids overflow problems on hosts with 64-bit time_t and 32-bit int. All callers changed. Now an inline function. Verify at compile-time that long int is wide enough to avoid these overflow problems. (guess_time_tm): New function. (__mktime_internal): Use it. Avoid overflow when computing yday on hosts with 64-bit long and 32-bit int. Remove tests for 69; no longer needed. Use if rather than #ifdef for LEAP_SECONDS_POSSIBLE so that the code is checked by more compilers. Do not rely on floating point to probe: stick to integer arithmetic, to avoid potential porting problems. Repair potential overflow correctly in the Southern Hemisphere. (localtime_offset): Add a FIXME for the case where time_t is unsigned.
71 lines
1.4 KiB
C
71 lines
1.4 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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int
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main (void)
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{
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struct tm time_str, *tm;
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time_t t;
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char daybuf[20];
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int result;
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time_str.tm_year = 2001 - 1900;
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time_str.tm_mon = 7 - 1;
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time_str.tm_mday = 4;
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time_str.tm_hour = 0;
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time_str.tm_min = 0;
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time_str.tm_sec = 1;
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time_str.tm_isdst = -1;
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if (mktime (&time_str) == -1)
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{
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(void) puts ("-unknown-");
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result = 1;
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}
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else
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{
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(void) strftime (daybuf, sizeof (daybuf), "%A", &time_str);
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(void) puts (daybuf);
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result = strcmp (daybuf, "Wednesday") != 0;
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}
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setenv ("TZ", "EST+5", 1);
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#define EVENING69 1 * 60 * 60 + 2 * 60 + 29
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t = EVENING69;
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tm = localtime (&t);
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if (tm == NULL)
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{
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(void) puts ("localtime returned NULL");
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result = 1;
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}
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else
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{
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time_str = *tm;
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t = mktime (&time_str);
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if (t != EVENING69)
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{
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printf ("mktime returned %ld, expected %d\n",
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(long) t, EVENING69);
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result = 1;
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}
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else
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(void) puts ("Dec 31 1969 EST test passed");
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setenv ("TZ", "CET-1", 1);
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t = mktime (&time_str);
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#define EVENING69_CET (EVENING69 - (5 - -1) * 60 * 60)
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if (t != EVENING69_CET)
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{
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printf ("mktime returned %ld, expected %ld\n",
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(long) t, (long) EVENING69_CET);
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result = 1;
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}
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else
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(void) puts ("Dec 31 1969 CET test passed");
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}
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return result;
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}
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