ctrl+c and destructors

[Adam D. Ruppe]

On Thursday, 3 October 2013 at 00:25:26 UTC, Walter Bright wrote:
> Although I haven't seen the system you describe, I'm very 
> skeptical that it found the solution to the problem of a 
> program successfully continuing after it has crashed due to 
> program bugs. I remain firmly convinced that that is an utterly 
> wrong and doomed approach to the problem of reliability.

Segfaults aren't necessarily bugs... though I'm not sure if a 
userspace handler can do much about it. But from a kernel 
perspective, they can be generated by page faults too, which can 
be successfully handled by loading the requested memory block 
(e.g. from a swap file) and then retrying the operation, or 
copying the page into a writable location and mapping that in; 
hardware assisted copy-on-write.

I've never tried to do this in a unix program so I don't know how 
much you can do, but presumably Sean's example did something 
along these lines, so it would be by design rather than bugs.