[PATCH v3] libc: Extend __libc_freeres framework (Bug 23329).

[Florian Weimer]

> +	[BZ #23329]
> +	* include/libc-symbols.h: Comment the freeres framework.
> +	* include/set-hooks.h: Include libc-symbols.h.  Fix comment.
> +	* dlfcn/Makefile (libdl-routines): Add dlfreeres.
> +	* dlfcn/Versions (GLIBC_PRIVATE): Add __libdl_freeres.
> +	* dlfcn/dlerror.c: Include libc-symbols.h
> +	(__dlerror_main_freeres): New function.
> +	* dlfcn/dlfreeres.c: New file.
> +	* dlfcn/sdlfreeres.c: New file.
> +	* include/dlfcn.h: Declare __dlerror_main_freeres.
> +	* malloc/set-freeres.c: Declare __libdl_freeres, and
> +	__libpthread_freeres.
> +	(__libc_subfreeres): Call __libdl_freeres, and __libpthread_freeres if
> +	the releavant libraries are loaded.
> +	* malloc/thread-freeres.c: Add comments.
> +	* nptl/Makefile (libpthread-routines): Add nptlfreeres.
> +	* nptl/Version (GLIBC_PRIVATE): Add __libpthread_freeres.
> +	* nptl/allocatestack.c (__nptl_free_stacks): New function.
> +	(__free_stacks): Rename to...
> +	(free_stacks): ...this. Mark static.
> +	(queue_stack): Call free_stacks.
> +	* nptl/libc_pthread_init.c [SHARED] (freeres_libpthread): Delete.
> +	* nptl/nptl-init.c: Delete delcaration of nptl_freeres.
> +	* sysdeps/nptl/pthread-functions.h (pthread_functions): Remove
> +	ptr_freeres element from struct.
> +	(pthread_functions): Remove .ptr_freeres from struct initializer.
> +	[SHARED] (nptl_freeres): Remove.
> +	* nptl/nptlfreeres.c: New file.
> +	* nptl/pthreadP.h
> +	[IS_IN (libpthread) && SHARED ] (__unwind_freeres): Rename to...
> +	[IS_IN (libpthread)] (__nptl_unwind_freeres): ...this.  Mark
> +	attribute_hidden.
> +	(__free_stacks): Rename to...
> +	(__nptl_stacks_freeres): ...this.
> +	(__shm_directory_freeres): Declare.
> +	* nptl/unwind-forcedunwind.c (__unwind_freeres): Rename to...
> +	(__nptl_unwind_freeres): ...this.
> +	* resolv/res-close.c: Add comment.
> +	* resolv/resolv_conf.c: Include libc-symbols.h.
> +	* string/strerror_l.c: Include libc-symbols.h.
> +	* sunrpc/rpc_thread.c: Include libc-symbols.h.
> +	* sysdeps/mach/strerror_l.c: Inlcude libc-symbols.h
> +	* sysdeps/unix/sysv/linux/shm-directory.c (freeit): Rename to...
> +	[IS_IN (libpthread)] (__shm_directory_freeres): ...this.

ChangeLog looks okay now (but it still does not apply with git am -3 
--reject).
> diff --git a/dlfcn/dlfreeres.c b/dlfcn/dlfreeres.c
> new file mode 100644
> index 0000000000..8c18731b5c
…
> +void
> +__libdl_freeres (void)
> +{
> +  call_function_static_weak (__dlerror_main_freeres);
> +}
> +libc_hidden_def (__libdl_freeres)

Please remove the last line of the file before committing.  It is a 
no-op (otherwise it wouldn't compile due to the missing libc_hidden_proto).

Thanks,
Florian