[PATCH v2] libio: Use __wunderflow in _IO_getwline_info

[Andreas Schwab]

On Sep 29 2026, Adhemerval Zanella Netto wrote:

> On 21/09/26 05:24, Shamil Abdulaev wrote:
>> After a buffer refill, _IO_getwline_info reads the first character
>> through __wuflow and handles it on a separate path from the rest of
>> the buffer.  When extract_delim is negative, that path calls
>> _IO_sputbackc, the narrow-stream putback, on a wide stream, so it
>
> I wonder whether _IO_sputbackc is the correct call here, and not the
> wide _IO_sputbackwc.

That's one of the points of the patch, it removes that erroneous call.
I think it would make sense to remove the extract_delim parameter from
_IO_getwline and fold _IO_getwline_info into it.

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