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/* Test for fdopen bugs. */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#undef assert
#define assert(x) \
if (!(x)) \
{ \
fputs ("test failed: " #x "\n", stderr); \
retval = 1; \
goto the_end; \
}
char buffer[256];
int
main (int argc, char *argv[])
{
char name[] = "/tmp/tst-fdopen.XXXXXX";
FILE *fp = NULL;
int retval = 0;
int fd;
fd = mkstemp (name);
if (fd == -1)
{
printf ("mkstemp failed: %m\n");
return 1;
}
close (fd);
fp = fopen (name, "w");
assert (fp != NULL)
fputs ("foobar and baz", fp);
fclose (fp);
fp = NULL;
fd = open (name, O_RDONLY);
assert (fd != -1);
assert (lseek (fd, 5, SEEK_SET) == 5);
/* The file position indicator associated with the new stream is set to
the position indicated by the file offset associated with the file
descriptor. */
fp = fdopen (fd, "r");
assert (fp != NULL);
assert (getc (fp) == 'r');
assert (getc (fp) == ' ');
the_end:
if (fp != NULL)
fclose (fp);
unlink (name);
return retval;
}
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