From: Jens Gustedt <jens.gustedt@inria.fr>
To: musl@lists.openwall.com
Subject: Re: stdatomic implementation
Date: Tue, 15 Dec 2015 12:00:05 +0100 [thread overview]
Message-ID: <1450177205.314.11.camel@inria.fr> (raw)
In-Reply-To: <20151213145950.GH23362@port70.net>
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Am Sonntag, den 13.12.2015, 15:59 +0100 schrieb Szabolcs Nagy:
> i recently run into a problem that you may be interested in:
> the gcc atomic builtins do not handle atomic pointer types as
> expected.
>
> T *p;
> __atomic_fetch_add(&p,1);
>
> adds 1 to (char*)p instead of sizeof(T).
>
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64843
thanks again for pointing me at this
Since here we can assume that we flat addressing and that we also have
C11's _Generic, a workaround is simple. I have now implemented this,
and as long as one is using my header file and not gcc's it seems to
work.
Jens
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prev parent reply other threads:[~2015-12-15 11:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-13 10:01 Jens Gustedt
2015-12-13 14:59 ` Szabolcs Nagy
2015-12-13 15:25 ` Jens Gustedt
2015-12-15 11:00 ` Jens Gustedt [this message]
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