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/* Test of perror.
To be used only for testing glibc. */
#include <errno.h>
#include <error.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wchar.h>
#define MB_EXP \
"null mode test 1: Invalid or incomplete multibyte or wide character\n" \
"multibyte string\n" \
"<0 mode test: Invalid argument\n"
#define MB_EXP_LEN (sizeof (MB_EXP) - 1)
#define WC_EXP \
"null mode test 2: Invalid or incomplete multibyte or wide character\n" \
"wide string\n" \
">0 mode test: Invalid argument\n"
#define WC_EXP_LEN (sizeof (WC_EXP) - 1)
static int
do_test (void)
{
int fd;
char fname[] = "/tmp/tst-perror.XXXXXX";
int result = 0;
char buf[200];
ssize_t n;
fd = mkstemp (fname);
if (fd == -1)
error (EXIT_FAILURE, errno, "cannot create temporary file");
/* Make sure the file gets removed. */
unlink (fname);
fclose (stderr);
if (dup2 (fd, 2) == -1)
{
printf ("cannot create file descriptor 2: %m\n");
exit (EXIT_FAILURE);
}
stderr = fdopen (2, "w");
if (stderr == NULL)
{
printf ("fdopen failed: %m\n");
exit (EXIT_FAILURE);
}
if (fwide (stderr, 0) != 0)
{
printf ("stderr not initially in mode 0\n");
exit (EXIT_FAILURE);
}
errno = EILSEQ;
perror ("null mode test 1");
if (fwide (stderr, 0) != 0)
{
puts ("perror changed the mode from 0");
result = 1;
}
fputs ("multibyte string\n", stderr);
if (fwide (stderr, 0) >= 0)
{
puts ("fputs didn't set orientation to narrow");
result = 1;
}
errno = EINVAL;
perror ("<0 mode test");
fclose (stderr);
lseek (fd, 0, SEEK_SET);
n = read (fd, buf, sizeof (buf));
if (n != MB_EXP_LEN || memcmp (buf, MB_EXP, MB_EXP_LEN) != 0)
{
printf ("multibyte test failed. Expected:\n%s\nGot:\n%.*s\n",
MB_EXP, (int) n, buf);
result = 1;
}
else
puts ("multibyte test succeeded");
lseek (fd, 0, SEEK_SET);
ftruncate (fd, 0);
if (dup2 (fd, 2) == -1)
{
printf ("cannot create file descriptor 2: %m\n");
exit (EXIT_FAILURE);
}
stderr = fdopen (2, "w");
if (stderr == NULL)
{
printf ("fdopen failed: %m\n");
exit (EXIT_FAILURE);
}
if (fwide (stderr, 0) != 0)
{
printf ("stderr not initially in mode 0\n");
exit (EXIT_FAILURE);
}
errno = EILSEQ;
perror ("null mode test 2");
if (fwide (stderr, 0) != 0)
{
puts ("perror changed the mode from 0");
result = 1;
}
fputws (L"wide string\n", stderr);
if (fwide (stderr, 0) <= 0)
{
puts ("fputws didn't set orientation to wide");
result = 1;
}
errno = EINVAL;
perror (">0 mode test");
fclose (stderr);
lseek (fd, 0, SEEK_SET);
n = read (fd, buf, sizeof (buf));
if (n != WC_EXP_LEN || memcmp (buf, WC_EXP, WC_EXP_LEN) != 0)
{
printf ("wide test failed. Expected:\n%s\nGot:\n%.*s\n",
WC_EXP, (int) n, buf);
result = 1;
}
else
puts ("wide test succeeded");
close (fd);
return result;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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