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Drop GLIBC_TUNABLES for setxid programs when tunables is disabled (bz #21073)
[thirdparty/glibc.git] / libio / bug-rewind2.c
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1#include <stdio.h>
2#include <wchar.h>
3
4
5static int fd;
6
7static void prepare (void);
8#define PREPARE(argc, argv) prepare ()
9
10
11#define TEST_FUNCTION do_test ()
12static int do_test (void);
13#include "../test-skeleton.c"
14
15
16static void
17prepare (void)
18{
19 fd = create_temp_file ("wrewind2.", NULL);
20 if (fd == -1)
21 exit (3);
22}
23
24
25static int
26do_test (void)
27{
28 wchar_t dummy[10];
29 int ret = 0;
30 FILE *fp;
31 int result = 0;
32
33 fp = fdopen (fd, "w+");
34 if (fp == NULL)
35 {
36 puts ("fopen(""testfile"", ""w+"") returned NULL.");
37 return 1;
38 }
39 else
40 {
41 fwprintf (fp, L"abcd");
42 printf ("current pos = %ld\n", ftell (fp));
43 if (ftell (fp) != 4)
44 result = 1;
45
46 rewind (fp);
47 ret = fwscanf (fp, L"%c", dummy);
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48 if (ret != 1)
49 {
50 printf ("fwscanf returned %d, expected 1\n", ret);
51 result = 1;
52 }
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53
54 printf ("current pos = %ld\n", ftell (fp));
55 if (ftell (fp) != 1)
56 result = 1;
57
58 rewind (fp);
59 printf ("current pos = %ld\n", ftell (fp));
60 if (ftell (fp) != 0)
61 result = 1;
62
63 fclose (fp);
64 }
65
66 return result;
67}