import http://sourceware.org/ml/libc-ports/2007-12/msg00000.html Index: libc/bits/stdio-lock.h =================================================================== --- libc.orig/bits/stdio-lock.h 2009-10-28 14:34:19.000000000 -0700 +++ libc/bits/stdio-lock.h 2009-10-28 14:34:54.000000000 -0700 @@ -50,6 +50,8 @@ __libc_lock_define_recursive (typedef, _ _IO_cleanup_region_start ((void (*) (void *)) _IO_funlockfile, (_fp)); \ _IO_flockfile (_fp) +# define _IO_acquire_lock_clear_flags2(_fp) _IO_acquire_lock (_fp) + # define _IO_release_lock(_fp) \ _IO_funlockfile (_fp); \ _IO_cleanup_region_end (0)