/* Print formatted output to the stream FP.
Return string length of formatted string. On error, return a negative
value. */
int
fprintf (FILE *fp, const char *format, ...)
{
char buf[2000];
char *output;
size_t len;
size_t lenbuf = sizeof (buf);
va_list args;
va_start (args, format);
output = vasnprintf (buf, &lenbuf, format, args);
len = lenbuf;
va_end (args);
if (!output)
{
fseterr (fp);
return -1;
}
if (fwrite (output, 1, len, fp) < len)
{
if (output != buf)
{
int saved_errno = errno;
free (output);
errno = saved_errno;
}
return -1;
}
if (output != buf)
free (output);
if (len > INT_MAX)
{
errno = EOVERFLOW;
fseterr (fp);
return -1;
}
return len;
}
int rpl_vfprintf( FILE *fp, char *format, va_list args )
{
int eax;
char buf[2000];
char *output;
size_t len;
size_t lenbuf = 2000;
output = vasnprintf( buf, &lenbuf, format, args );
len = lenbuf;
if ( output == 0 )
{
fseterr( fp );
return -1;
}
else
{
if ( fwrite( output, 1, len, fp ) < len )
{
if ( output != buf[0] )
{
int saved_errno = *(int*)(__errno_location( ));
free( output );
*(int*)(__errno_location( )) = saved_errno;
}
return -1;
}
else
{
if ( (int)len < 0 )
{
*(int*)(__errno_location( )) = 75;
fseterr( fp );
return -1;
}
else
return (int)len;
}
}
}
int
main ()
{
/* All streams are initially created with the error indicator cleared. */
if (ferror (stdout))
abort ();
/* Verify that fseterr() works. */
fseterr (stdout);
if (!ferror (stdout))
abort ();
/* Verify fseterr's effect can be undone by clearerr(). */
clearerr (stdout);
if (ferror (stdout))
abort ();
return 0;
}
