1 /*
2 * Copyright (C) 2008 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28 /* a small program to test the tm_zone setting in Bionic */
29 #include <time.h>
30 #include <stdio.h>
31 #include <stdlib.h>
32
main(void)33 int main( void )
34 {
35 #ifndef TM_ZONE
36 fprintf(stderr, "TM_ZONE is not defined in <time.h> !!\n" );
37 return 1;
38 #else
39 const char* tz = getenv("TZ");
40 time_t now = time(NULL);
41 struct tm tm0;
42 struct tm* tm;
43
44 if (tz) {
45 printf( "TZ set to '%s'\n", tz );
46 } else
47 printf( "TZ is not defined\n" );
48
49 tm = localtime_r( &now, &tm0 );
50 printf( "localtime_r() returns timezone abbreviation '%s'\n", tm->TM_ZONE ? tm->TM_ZONE : "<NULL POINTER>" );
51 printf( "tzname[0] is '%s'\n", tzname[0] ? tzname[0] : "<NULL POINTER>" );
52 printf( "tzname[1] is '%s'\n", tzname[1] ? tzname[1] : "<NULL POINTER>" );
53 #endif
54 return 0;
55 }
56