Re: [PATCH] ARM: Convert BUG() to use unreachable()

Paolo Bonzini
2009-12-22T11:33:44Z

On 12/17/2009 06:17 PM, Richard Guenther wrote:
> It shouldn't as *(int *)0 = 0; might trap. But if you want to be sure
> use
> __builtin_trap ();
> instead for the whole sequence (the unreachable is implied then).
> GCC choses a size-optimal trap representation for your target then.

Agree that it shouldn't but just to be sure I'd use

*(volatile int *)0 = 0;
unreachable ();

Paolo