From: Brian Inglis <Brian.Inglis@Shaw.ca>
To: newlib@sourceware.org
Subject: Re: fprintf() crashes on wide-oriented stream.
Date: Thu, 28 Sep 2023 14:06:59 -0600 [thread overview]
Message-ID: <f3ff129f-87da-b159-ce1e-3de46a2137dc@Shaw.ca> (raw)
In-Reply-To: <20230928174223.22fa3f5bc2ed7c92170a0db0@nifty.ne.jp>
On 2023-09-28 02:42, Takashi Yano wrote:
> On Thu, 28 Sep 2023 12:58:27 +0900
> Takashi Yano wrote:
>> On Tue, 26 Sep 2023 12:41:47 +0900
>> Takashi Yano wrote:
>>> With this patch, __sfputs_r/__sprint_r is split into two versions, one
>>> is for vfprintf which does not handle wide string, and the other (newly
>>> introduced __sfputws_r/__swprin_r) is for vfwprintf which handles wide
>>> string. Please note that fprintf gets working for wide orient stream
>>> just like BSD libc, which behaves differently from GNU libc.
Note that glibc handles %c/%s in wchar_t functions and %C/%lc/%S/%ls in char
functions: see `man -m linux 3 fwide` NOTES.
>> I confirmed musl libc also behaves as BSD libc.
>>
>> In the GNU libc (glibc), fprintf() returns -1 with no errno set if the
>> stream is wide-oriented.
That is not documented in released man-pages-linux.
What is documented is that the width setting persists once set, and can not be
changed until the stream is closed.
> I also confirmed that Solaris libc behaves as same as BSD libc.
>
> I wonder what are the advantages of the glibc implementation?
> Any historical reason?
What are the behavioural differences you perceive?
There is a public inbox you can search at
https://inbox.sourceware.org/libc-help/
and you can ask mailto:libc-help@sourceware.org about anything.
--
Take care. Thanks, Brian Inglis Calgary, Alberta, Canada
La perfection est atteinte Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer but when there is no more to cut
-- Antoine de Saint-Exupéry
next prev parent reply other threads:[~2023-09-28 20:07 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-26 3:41 Takashi Yano
2023-09-26 8:30 ` Takashi Yano
2023-10-03 8:30 ` Takashi Yano
2023-10-03 17:31 ` Jeff Johnston
2023-10-03 20:12 ` Takashi Yano
2023-10-03 18:07 ` Brian Inglis
2023-09-28 3:58 ` Takashi Yano
2023-09-28 8:42 ` Takashi Yano
2023-09-28 20:06 ` Brian Inglis [this message]
2023-10-04 20:16 ` Jeff Johnston
2023-10-05 10:18 ` Takashi Yano
2023-10-05 15:18 ` Takashi Yano
2023-10-05 18:20 ` Torbjorn SVENSSON
2023-11-07 13:24 ` Corinna Vinschen
2023-11-07 16:50 ` Brian Inglis
2023-11-07 19:12 ` Corinna Vinschen
2023-11-08 12:05 ` Takashi Yano
2023-11-02 18:53 ` Corinna Vinschen
2023-11-06 18:26 ` Brian Inglis
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