[PATCH] libio: use _IO_have_wbackup for wide streams

[Andreas Schwab]

On Jun 08 2026, Carlos O'Donell wrote:

> 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?

I have found this be code inspection only.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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