diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/lowlevellock-futex.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/lowlevellock-futex.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/sysdeps/unix/sysv/linux/lowlevellock-futex.h b/sysdeps/unix/sysv/linux/lowlevellock-futex.h index 59f6627bdb..7111bac943 100644 --- a/sysdeps/unix/sysv/linux/lowlevellock-futex.h +++ b/sysdeps/unix/sysv/linux/lowlevellock-futex.h @@ -1,5 +1,5 @@ /* Low-level locking access to futex facilities. Linux version. - Copyright (C) 2005-2015 Free Software Foundation, Inc. + Copyright (C) 2005-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -54,8 +54,13 @@ #if IS_IN (libc) || IS_IN (rtld) /* In libc.so or ld.so all futexes are private. */ # ifdef __ASSUME_PRIVATE_FUTEX -# define __lll_private_flag(fl, private) \ - ((fl) | FUTEX_PRIVATE_FLAG) +# define __lll_private_flag(fl, private) \ + ({ \ + /* Prevent warnings in callers of this macro. */ \ + int __lll_private_flag_priv __attribute__ ((unused)); \ + __lll_private_flag_priv = (private); \ + ((fl) | FUTEX_PRIVATE_FLAG); \ + }) # else # define __lll_private_flag(fl, private) \ ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) |