[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] Re: [PATCH, RFC] Replace assert(0) with abort() or cpu
From: |
Jamie Lokier |
Subject: |
Re: [Qemu-devel] Re: [PATCH, RFC] Replace assert(0) with abort() or cpu_abort() |
Date: |
Tue, 16 Mar 2010 17:52:34 +0000 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
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
- [Qemu-devel] Re: [PATCH, RFC] Replace assert(0) with abort() or cpu_abort(), (continued)
- [Qemu-devel] Re: [PATCH, RFC] Replace assert(0) with abort() or cpu_abort(), Markus Armbruster, 2010/03/15
- Re: [Qemu-devel] [PATCH, RFC] Replace assert(0) with abort() or cpu_abort(), Markus Armbruster, 2010/03/15
- [Qemu-devel] Re: [PATCH, RFC] Replace assert(0) with abort() or cpu_abort(), Paolo Bonzini, 2010/03/16
- Re: [Qemu-devel] Re: [PATCH, RFC] Replace assert(0) with abort() or cpu_abort(), Markus Armbruster, 2010/03/16
- Re: [Qemu-devel] Re: [PATCH, RFC] Replace assert(0) with abort() or cpu_abort(), Jamie Lokier, 2010/03/16
- Re: [Qemu-devel] Re: [PATCH, RFC] Replace assert(0) with abort() or cpu_abort(), Paolo Bonzini, 2010/03/17
- Re: [Qemu-devel] Re: [PATCH, RFC] Replace assert(0) with abort() or cpu_abort(), Blue Swirl, 2010/03/17
- Re: [Qemu-devel] Re: [PATCH, RFC] Replace assert(0) with abort() or cpu_abort(), Jamie Lokier, 2010/03/18
- Re: [Qemu-devel] Re: [PATCH, RFC] Replace assert(0) with abort() or cpu_abort(), Blue Swirl, 2010/03/19
- Re: [Qemu-devel] Re: [PATCH, RFC] Replace assert(0) with abort() or cpu_abort(), Markus Armbruster, 2010/03/18
- Re: [Qemu-devel] Re: [PATCH, RFC] Replace assert(0) with abort() or cpu_abort(),
Jamie Lokier <=
- Re: [Qemu-devel] Re: [PATCH, RFC] Replace assert(0) with abort() or cpu_abort(), Markus Armbruster, 2010/03/16