From: Jamie Lokier <jamie@shareable.org>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: [PATCH, RFC] Replace assert(0) with abort() or cpu_abort()
Date: Tue, 16 Mar 2010 17:52:34 +0000 [thread overview]
Message-ID: <20100316175234.GC19160@shareable.org> (raw)
In-Reply-To: <hnnf7e$8f9$1@dough.gmane.org>
Paolo Bonzini wrote:
> On 03/15/2010 07:36 PM, Markus Armbruster wrote:
> >Please don't tell me that user emulators make abort() return. abort()
> >is declared __noreturn__, and the optimizer may well rely on that.
>
> If the user programs make a "signal (SIGABRT, SIG_IGN)" call, I suppose
> abort() will return.
On Linux, man abort says:
If the SIGABRT signal is ignored, or caught by a handler that returns,
the abort() function will still terminate the process. It does this by
restoring the default disposition for SIGABRT and then raising the sig‐
nal for a second time.
However I have a suspicious that I've seen abort() return on some
other OS in the distant past, maybe SunOS 4.
I wouldn't rely on abort() always terminating the process on all OSes.
-- Jamie
next prev parent reply other threads:[~2010-03-16 17:52 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-13 14:56 [Qemu-devel] [PATCH, RFC] Replace assert(0) with abort() or cpu_abort() Blue Swirl
2010-03-13 15:43 ` Edgar E. Iglesias
2010-03-15 7:25 ` Markus Armbruster
2010-03-15 17:23 ` Blue Swirl
2010-03-15 18:19 ` [Qemu-devel] " Paolo Bonzini
2010-03-15 18:26 ` Blue Swirl
2010-03-15 18:33 ` Paolo Bonzini
2010-03-15 19:02 ` Blue Swirl
2010-03-15 18:28 ` Markus Armbruster
2010-03-15 18:36 ` [Qemu-devel] " Markus Armbruster
2010-03-16 8:24 ` [Qemu-devel] " Paolo Bonzini
2010-03-16 8:54 ` Markus Armbruster
2010-03-16 17:55 ` Jamie Lokier
2010-03-17 9:10 ` Paolo Bonzini
2010-03-17 19:50 ` Blue Swirl
2010-03-19 2:03 ` Jamie Lokier
2010-03-19 20:28 ` Blue Swirl
2010-03-18 8:36 ` Markus Armbruster
2010-03-16 17:52 ` Jamie Lokier [this message]
2010-03-16 18:35 ` Markus Armbruster
[not found] <1317337484.400521268903946714.JavaMail.root@zmail07.collab.prod.int.phx2.redhat.com>
2010-03-18 9:19 ` Paolo Bonzini
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