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/* Regression test for fseek and freopen bugs. */
#include <stdio.h>
int
main (int argc, char *argv[])
{
int lose = 0;
char filename[L_tmpnam];
FILE *fp;
if (tmpnam (filename) == NULL)
{
printf ("tmpnam failed\n");
lose = 1;
}
else
{
fp = fopen (filename, "w+");
fprintf (fp, "Hello world!\n");
fflush (fp);
fseek (fp, 5L, SEEK_SET);
if (fseek (fp, -1L, SEEK_CUR) < 0)
{
printf ("seek failed\n");
lose = 1;
}
fclose (fp);
remove (filename);
}
{
FILE *file1;
FILE *file2;
char filename1[L_tmpnam];
char filename2[L_tmpnam];
int ch;
if (tmpnam (filename1) == NULL || tmpnam (filename2) == NULL)
{
printf ("tmpnam failed\n");
lose = 1;
}
else
{
file1 = fopen (filename1, "w");
fclose (file1);
file2 = fopen (filename2, "w");
fputc ('x', file2);
fclose (file2);
file1 = fopen (filename1, "r");
file2 = freopen (filename2, "r", file1);
if ((ch = fgetc (file2)) != 'x')
{
printf ("wrong character in reopened file, value = %d\n", ch);
lose = 1;
}
fclose (file2);
remove (filename1);
remove (filename2);
}
}
puts (lose ? "Test FAILED!" : "Test succeeded.");
return lose;
}
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