[PATCH] Add missing lock releases in __register_exitproc().

[Corinna Vinschen]

On Dec 12 15:10, Freddie Chopin wrote:

> >From 226aeb4f502fc9404567062f68d527ef012ea683 Sat, 12 Dec 2015 15:07:48 +0100
> From: Freddie Chopin <freddie.chopin@gmail.com>
> Date: Sat, 12 Dec 2015 11:52:21 +0100
> Subject: [PATCH] Add missing lock releases in __register_exitproc().
> 
> 
> In some code paths the __atexit_lock held by this function was not
> released when returning with an error.
> 
>         * libc/stdlib/__atexit.c (__register_exitproc): Always release
>         lock before return.
> 
> diff --git a/newlib/libc/stdlib/__atexit.c b/newlib/libc/stdlib/__atexit.c
> index 18edc8c..a3d5bdf 100644
> --- a/newlib/libc/stdlib/__atexit.c
> +++ b/newlib/libc/stdlib/__atexit.c
> @@ -83,12 +83,20 @@
>    if (p->_ind >= _ATEXIT_SIZE)
>      {
>  #ifndef _ATEXIT_DYNAMIC_ALLOC
> +#ifndef __SINGLE_THREAD__
> +      __lock_release_recursive(__atexit_lock);
> +#endif
>        return -1;
>  #else
>        /* Don't dynamically allocate the atexit array if malloc is not
>  	 available.  */
>        if (!malloc)
> -	return -1;
> +	{
> +#ifndef __SINGLE_THREAD__
> +	  __lock_release_recursive(__atexit_lock);
> +#endif
> +	  return -1;
> +	}
>  
>        p = (struct _atexit *) malloc (sizeof *p);
>        if (p == NULL)


Applied.


Thanks,
Corinna

-- 
Corinna Vinschen
Cygwin Maintainer
Red Hat
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