[PATCH][BZ 13690] Do not violate mutex destruction requirements.

[Andreas Schwab]

David Miller <davem@davemloft.net> writes:

> From: Torvald Riegel <triegel@redhat.com>
> Date: Tue, 14 Jul 2015 22:21:13 +0200
>
>> Dave, could you test on sparc, please?
>
> This breaks the sparc build:
>
> gconv_db.c: In function ‘__gconv_find_transform’:
> gconv_db.c:734:7: error: unused variable ‘__private’ [-Werror=unused-variable]
> gconv_db.c:741:7: error: unused variable ‘__private’ [-Werror=unused-variable]
> gconv_db.c:760:7: error: unused variable ‘__private’ [-Werror=unused-variable]
> gconv_db.c:768:3: error: unused variable ‘__private’ [-Werror=unused-variable]
> gconv_db.c: In function ‘__gconv_close_transform’:
> gconv_db.c:802:3: error: unused variable ‘__private’ [-Werror=unused-variable]
> cc1: all warnings being treated as errors
> make[2]: *** [/home/davem/src/GIT/GLIBC/build-sparcv9/iconv/gconv_db.o] Error 1
> make[2]: *** Waiting for unfinished jobs....
> gconv_db.c: In function ‘__gconv_find_transform’:
> gconv_db.c:734:7: error: unused variable ‘__private’ [-Werror=unused-variable]
> gconv_db.c:741:7: error: unused variable ‘__private’ [-Werror=unused-variable]
> gconv_db.c:760:7: error: unused variable ‘__private’ [-Werror=unused-variable]
> gconv_db.c:768:3: error: unused variable ‘__private’ [-Werror=unused-variable]
> gconv_db.c: In function ‘__gconv_close_transform’:
> gconv_db.c:802:3: error: unused variable ‘__private’ [-Werror=unused-variable]
> cc1: all warnings being treated as errors

#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)
# else
#  define __lll_private_flag(fl, private) \
  ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex))
# endif

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."