[PATCH] libio: use _IO_have_wbackup for wide streams

[Carlos O'Donell]

On 6/8/26 5:46 AM, Andreas Schwab wrote:
> On Jun 08 2026, Florian Weimer wrote:
> 
>> Is it possible to create tests for these bugs?
> 
> I don't know how to do that.
> 

The buffer is used for ungetwc? Is this visible in some way?

-- 
Cheers,
Carlos.