mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-27 05:00:15 +00:00
7b15dabfdd
This change adds new test to assess mktime's functionality. To be more specific - following use cases are checked: - Pass struct tm as epoch time - Pass struct tm as value just before Y2038 threshold (returned value shall be 0x7FFFFFFF) - Pass struct tm as the first value after Y2038 threshold (expected value - 0x80000000) Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
110 lines
2.8 KiB
C
110 lines
2.8 KiB
C
/* Test for mktime (4)
|
|
Copyright (C) 2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <time.h>
|
|
#include <stdlib.h>
|
|
#include <support/check.h>
|
|
|
|
const struct tm tm0 =
|
|
{
|
|
.tm_year = 70,
|
|
.tm_mon = 0,
|
|
.tm_mday = 1,
|
|
.tm_hour = 0,
|
|
.tm_min = 0,
|
|
.tm_sec = 0,
|
|
.tm_wday = 4,
|
|
.tm_yday = 0,
|
|
};
|
|
|
|
const struct tm tmY2038 =
|
|
{
|
|
.tm_year = 138,
|
|
.tm_mon = 0,
|
|
.tm_mday = 19,
|
|
.tm_hour = 3,
|
|
.tm_min = 14,
|
|
.tm_sec = 7,
|
|
};
|
|
|
|
const struct tm tm32bitmax =
|
|
{
|
|
.tm_year = 206,
|
|
.tm_mon = 1,
|
|
.tm_mday = 7,
|
|
.tm_hour = 6,
|
|
.tm_min = 28,
|
|
.tm_sec = 15,
|
|
};
|
|
|
|
static
|
|
int test_mktime_helper (struct tm *tm, long long int exp_val, int line)
|
|
{
|
|
time_t result, t;
|
|
|
|
/* Check if we run on port with 32 bit time_t size. */
|
|
if (__builtin_add_overflow (exp_val, 0, &t))
|
|
return 0;
|
|
|
|
result = mktime (tm);
|
|
if (result == (time_t) -1)
|
|
FAIL_RET ("*** mktime failed: %m in line: %d", line);
|
|
|
|
if ((long long int) result != exp_val)
|
|
FAIL_RET ("*** Result different than expected (%lld != %lld) in %d\n",
|
|
(long long int) result, exp_val, line);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
struct tm t;
|
|
/* Use glibc time zone extension "TZ=:" to to guarantee that UTC
|
|
without leap seconds is used for the test. */
|
|
TEST_VERIFY_EXIT (setenv ("TZ", ":", 1) == 0);
|
|
|
|
/* Check that mktime (1970-01-01 00:00:00) returns 0. */
|
|
t = tm0;
|
|
test_mktime_helper (&t, 0, __LINE__);
|
|
|
|
/* Check that mktime (2038-01-19 03:14:07) returns 0x7FFFFFFF. */
|
|
t = tmY2038;
|
|
test_mktime_helper (&t, 0x7fffffff, __LINE__);
|
|
|
|
/* Check that mktime (2038-01-19 03:14:08) returns 0x80000000
|
|
(time_t overflow). */
|
|
t = tmY2038;
|
|
t.tm_sec++;
|
|
test_mktime_helper (&t, 0x80000000, __LINE__);
|
|
|
|
/* Check that mktime (2106-02-07 06:28:15) returns 0xFFFFFFFF. */
|
|
t = tm32bitmax;
|
|
test_mktime_helper (&t, 0xFFFFFFFF, __LINE__);
|
|
|
|
/* Check that mktime (2106-02-07 06:28:16) returns 0x100000000. */
|
|
t = tm32bitmax;
|
|
t.tm_sec++;
|
|
test_mktime_helper (&t, 0x100000000, __LINE__);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|