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/* If stdio is working correctly, after this is run infile and outfile
will have the same contents. If the bug (found in GNU C library 0.3)
exhibits itself, outfile will be missing the 2nd through 1023rd
characters. */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
static char buf[8192];
int
main (void)
{
FILE *in;
FILE *out;
static char inname[] = OBJPFX "bug5test.in";
static char outname[] = OBJPFX "bug5test.out";
char *printbuf;
size_t i;
int result;
/* Create a test file. */
in = fopen (inname, "w+");
if (in == NULL)
{
perror (inname);
return 1;
}
for (i = 0; i < 1000; ++i)
fprintf (in, "%Zu\n", i);
out = fopen (outname, "w");
if (out == NULL)
{
perror (outname);
return 1;
}
if (fseek (in, 0L, SEEK_SET) != 0)
abort ();
putc (getc (in), out);
i = fread (buf, 1, sizeof (buf), in);
if (i == 0)
{
perror ("fread");
return 1;
}
if (fwrite (buf, 1, i, out) != i)
{
perror ("fwrite");
return 1;
}
fclose (in);
fclose (out);
puts ("There should be no further output from this test.");
fflush (stdout);
/* We must remove this entry to assure the `cmp' binary does not use
the perhaps incompatible new shared libraries. */
unsetenv ("LD_LIBRARY_PATH");
asprintf (&printbuf, "cmp %s %s", inname, outname);
result = system (printbuf);
remove (inname);
remove (outname);
exit ((result != 0));
}
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