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Message-ID: <20200219152050.586df0d6@inria.fr>
Date: Wed, 19 Feb 2020 15:20:50 +0100
From: Jens Gustedt <jens.gustedt@...ia.fr>
To: zhangtianci <zhangtianci1@...wei.com>
Cc: musl@...ts.openwall.com, "Songyunlong (Euler)" <yunlong.song@...wei.com>
Subject: Re: [PATCH] stdio: Fix fdopen bug
zhangtianci,
>POSIX's require on fdopen:
>
> The application shall ensure that the mode of the stream as
> expressed by the mode argument is allowed by the file access mode of
> the open file description to which fildes refers.
>
>So I think the example above should return EINVAL.
No, the "application" is the user code, so this is a requirement for
you, not musl.
Otherwise it would say "The *implementation* shall ensure …"
Jens
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