60 lines
1016 B
C
60 lines
1016 B
C
/* Test case from:
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https://sourceware.org/bugzilla/show_bug.cgi?id=16532#c0 */
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#include <assert.h>
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#include <fcntl.h>
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#include <stdio.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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FILE *fp;
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size_t written;
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off_t off;
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int do_flush = 0, do_fopen = 0;
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int opt;
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const char *const fname = "tst-ftell-with-fdopen.out";
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while ((opt = getopt (argc, argv, "fo")) != -1)
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{
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switch (opt)
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{
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case 'f':
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do_flush = 1;
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break;
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case 'o':
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do_fopen = 1;
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break;
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}
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}
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fp = fopen (fname, "w");
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written = fwrite ("abcabc", 1, 6, fp);
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assert (written == 6);
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fclose (fp);
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if (do_fopen)
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fp = fopen (fname, "a");
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else
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{
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int fd = open (fname, O_WRONLY, 0);
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assert (fd != -1);
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fp = fdopen (fd, "a");
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}
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assert (fp != NULL);
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written = fwrite ("ghi", 1, 3, fp);
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assert (written == 3);
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if (do_flush)
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fflush (NULL);
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off = ftello (fp);
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assert (off == 9);
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return 0;
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}
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