Internal abort call optimization?

[Richard Guenther]

On Tue, Jun 17, 2008 at 11:33 AM, Andi Kleen <andi@firstfloor.org> wrote:
> David Kastrup <dak@gnu.org> writes:
>>
>> However, the problem is obviously not restricted to Emacs.  If the
>> "noreturn" attribute for the internal abort were removed, at least only
>> abort calls with compatible stack frame and the same (tentative)
>> followup code would get folded.  That would avoid the worst
>> head-scratchers when trying to figure out what went wrong.
>
> Without noreturn gcc wouldn't know there is no return needed after
> the abort().  Disabling cross jumping would be probably better.
> I know of a couple of more cases where such an attribute would
> be useful.

You can also build with -fno-builtin-abort.

Richard.