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Date: Wed, 5 Sep 2012 23:12:36 -0400
From: Rich Felker <>
Subject: Re: Re: [PATCH] Add _Noreturn specifier to functions
 specified as such by ISO C11

On Wed, Sep 05, 2012 at 08:02:35PM +0200, philomath wrote:
> Hi,
> Here is an updated version, addressing the issues rich mentioned.
> Should I add _Noreturn to other functions too (such as the various a_crash
> versions, *err*, etc)?

I don't really care about the err.h functions; these are legacy junk
and should not be used in modern programs. I'm pretty much indifferent
to whether they get _Noreturn, but if so, let's save it for a separate

As for a_crash, I'd like having it there in principle, but I don't
like duplicating the #if logic in each platform's atomic.h. Since this
code is internal and already depends on __asm__, it probably would not
hurt to just use __attribute__((__noreturn__)), perhaps with #ifdef
__GNUC__ around it. It's the public headers that need to be compatible
with an arbitrary C99/C11 compiler; the internals of musl depend on
"minimal GNU C" in the form of inline asm and some related things.
This can also be a separate patch/commit since it's unrelated to
making the headers conform to C11.


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