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Date: Fri, 08 Feb 2013 17:48:18 +0100
From: Jens Gustedt <jens.gustedt@...ia.fr>
To: musl@...ts.openwall.com
Subject: guard bug for strerror_r
hi,
me again.
Digging a bit deeper in strerror_r I think the #if condition that
triggers the declaration of the POSIX version is wrong.
The linux man page says
The XSI-compliant version of strerror_r() is provided if:
(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && ! _GNU_SOURCE
Otherwise, the GNU-specific version is provided.
but the musl code has
#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
|| defined(_BSD_SOURCE)
...
int strerror_r (int, char *, size_t);
...
#endif
So if __GNU_SOURCE is set, glibc chooses their own interface and
musl choose the POSIX interface.
Why is musl touching __GNU_SOURCE at all?
Jens
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