_IO_funlockfile   327 maint/gnulib/lib/error.c   _IO_funlockfile (stderr);
_IO_funlockfile   398 maint/gnulib/lib/error.c   _IO_funlockfile (stderr);
_IO_funlockfile    42 maint/gnulib/lib/getopt.c # define funlockfile(fp) _IO_funlockfile (fp)