78 lines
1.4 KiB
C
78 lines
1.4 KiB
C
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/* Regression test for fseek and freopen bugs. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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int
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main (int argc, char *argv[])
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{
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int lose = 0;
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char filename[] = "/tmp/bug7.XXXXXX";
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FILE *fp;
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int fd = mkstemp (filename);
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if (fd == -1)
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{
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printf ("mkstemp failed\n");
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lose = 1;
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}
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else
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{
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close (fd);
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fp = fopen (filename, "w+");
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fprintf (fp, "Hello world!\n");
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fflush (fp);
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fseek (fp, 5L, SEEK_SET);
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if (fseek (fp, -1L, SEEK_CUR) < 0)
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{
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printf ("seek failed\n");
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lose = 1;
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}
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fclose (fp);
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remove (filename);
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}
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{
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FILE *file1;
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FILE *file2;
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char filename1[] = "/tmp/bug7.XXXXXX";
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char filename2[] = "/tmp/bug7.XXXXXX";
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int ch;
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int fd1 = mkstemp (filename1);
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int fd2 = mkstemp (filename2);
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if (fd1 == -1 || fd2 == -1)
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{
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printf ("mkstemp failed\n");
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lose = 1;
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}
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else
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{
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close (fd1);
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close (fd2);
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file1 = fopen (filename1, "w");
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fclose (file1);
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file2 = fopen (filename2, "w");
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fputc ('x', file2);
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fclose (file2);
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file1 = fopen (filename1, "r");
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file2 = freopen (filename2, "r", file1);
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if ((ch = fgetc (file2)) != 'x')
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{
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printf ("wrong character in reopened file, value = %d\n", ch);
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lose = 1;
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}
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fclose (file2);
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remove (filename1);
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remove (filename2);
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}
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}
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puts (lose ? "Test FAILED!" : "Test succeeded.");
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return lose;
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}
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