Checking patch libio/fileops.c...
error: while searching for:
  if (fp->_IO_write_ptr > fp->_IO_write_base)
    if (_IO_do_flush(fp)) return EOF;
  delta = fp->_IO_read_ptr - fp->_IO_read_end;
  if (delta != 0)
    {
      off64_t new_pos = _IO_SYSSEEK (fp, delta, 1);

error: patch failed: libio/fileops.c:799
error: libio/fileops.c: patch does not apply
Checking patch stdio-common/Makefile...
error: while searching for:
  tst-swscanf \
  tst-tmpnam \
  tst-ungetc \
  tst-ungetc-leak \
  tst-ungetc-nomem \
  tst-unlockedio \

error: patch failed: stdio-common/Makefile:302
error: stdio-common/Makefile: patch does not apply
Checking patch stdio-common/tst-ungetc-fflush.c...
error: stdio-common/tst-ungetc-fflush.c: already exists in working directory