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Message-ID: <1450177205.314.11.camel@inria.fr>
Date: Tue, 15 Dec 2015 12:00:05 +0100
From: Jens Gustedt <jens.gustedt@...ia.fr>
To: musl@...ts.openwall.com
Subject: Re: stdatomic implementation
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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