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

[Ondřej Bílka]

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)
     {
-- 
1.7.4.4