From: Grant Edwards <grant.b.edwards@gmail.com>
To: newlib@sourceware.org
Subject: Re: When/how is global "errno" variable from reent.c to be used?
Date: Fri, 16 Oct 2020 18:10:34 -0000 (UTC) [thread overview]
Message-ID: <rmcnmq$lsa$1@ciao.gmane.io> (raw)
In-Reply-To: <f8787caf-d3a0-c648-b805-e949b59129da@Damon-Family.org>
On 2020-10-16, Richard Damon <Richard@Damon-Family.org> wrote:
> Software the explicitly declares errno as
> extern int errno;
> is broken, and violates the C standard, and creates explicitly stated
> Undefined Behavior.
So the LWIP source is just plain wrong.
What is the global 'int errno' exported by reent.c for?
--
Grant
next prev parent reply other threads:[~2020-10-16 18:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-16 15:50 Grant Edwards
2020-10-16 16:38 ` Richard Damon
2020-10-16 18:10 ` Grant Edwards [this message]
2020-10-16 19:06 ` Richard Damon
2020-10-16 21:49 ` Grant Edwards
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