[PATCH] [BZ #15381] Initialize wide struct info.

[Carlos O'Donell]

On 05/14/2013 08:31 AM, Ondřej Bílka wrote:
> On Tue, May 14, 2013 at 01:59:13PM +0200, Julius Plenz wrote:
>> Hi,
>>
>> * Andreas Schwab <schwab@suse.de>:
>>>> Are you opposed to initializing _wide_data to NULL? 
>>>
>>> I would prefer -1 so that broken uses crash predictably. :-)
>>
>> Since undefined behaviour can be anything you like, both initializing
>> with NULL and with -1 is equally "valid".
>>
> OK, here is version with -1 (or 0xdeadbeef if you like it more)
> 
> ---
>  libio/genops.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/libio/genops.c b/libio/genops.c
> index 390d8d2..18039aa 100644
> --- a/libio/genops.c
> +++ b/libio/genops.c
> @@ -643,6 +643,7 @@ _IO_no_init (fp, flags, orientation, wd, jmp)
>  {
>    _IO_old_init (fp, flags);
>    fp->_mode = orientation;
> +  fp->_wide_data = (void *) -1;
>  #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
>    if (orientation >= 0)
>      {
> 

OK to checkin with ChangeLog, and NEWS update for BZ.

Cheers,
Carlos.