PowerPC: Add fenv macros for long double
[glibc.git] / libio / tst-freopen.c
blobf9e71773e7ee012bc3bfe9c74f7918e00d435154
1 /* Test freopen with mmap stdio.
2 Copyright (C) 2002-2014 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <string.h>
23 #include <unistd.h>
25 int
26 main (void)
28 char name[] = "/tmp/tst-freopen.XXXXXX";
29 const char * const test = "Let's test freopen.\n";
30 char temp[strlen (test) + 1];
31 int fd = mkstemp (name);
32 FILE *f;
34 if (fd == -1)
36 printf ("%u: cannot open temporary file: %m\n", __LINE__);
37 exit (1);
40 f = fdopen (fd, "w");
41 if (f == NULL)
43 printf ("%u: cannot fdopen temporary file: %m\n", __LINE__);
44 exit (1);
47 fputs (test, f);
48 fclose (f);
50 f = fopen (name, "r");
51 if (f == NULL)
53 printf ("%u: cannot fopen temporary file: %m\n", __LINE__);
54 exit (1);
57 if (fread (temp, 1, strlen (test), f) != strlen (test))
59 printf ("%u: couldn't read the file back: %m\n", __LINE__);
60 exit (1);
62 temp [strlen (test)] = '\0';
64 if (strcmp (test, temp))
66 printf ("%u: read different string than was written:\n%s%s",
67 __LINE__, test, temp);
68 exit (1);
71 f = freopen (name, "r+", f);
72 if (f == NULL)
74 printf ("%u: cannot freopen temporary file: %m\n", __LINE__);
75 exit (1);
78 if (fseek (f, 0, SEEK_SET) != 0)
80 printf ("%u: couldn't fseek to start: %m\n", __LINE__);
81 exit (1);
84 if (fread (temp, 1, strlen (test), f) != strlen (test))
86 printf ("%u: couldn't read the file back: %m\n", __LINE__);
87 exit (1);
89 temp [strlen (test)] = '\0';
91 if (strcmp (test, temp))
93 printf ("%u: read different string than was written:\n%s%s",
94 __LINE__, test, temp);
95 exit (1);
98 fclose (f);
100 unlink (name);
101 exit (0);