[Vm-dev] Cog + Pi + OSProcess

[David T. Lewis]

Oh-oh, I might have to break down and buy a Raspberry Pi :-)

Have you (or anyone else) run the OSProcess/CommandShell test suite on a
Pi before, or is this the first time someone is looking at it? If it is
the first time, then I /strongly/ recommend trying it first on a V3 image
with interpreter VM build as per http://wiki.squeak.org/squeak/6354. I'm
afraid you will be flying blind if you don't try that first.

Dave

>
> I finally got a moment to look at this - not that I really have much clue
> about the whole unix process thing - and it appears that something is odd
> with the compiled code in the plugin.
>
> My test is very simple - run the UnixProcess class>listDirectory example.
> It exits with a segfault and the forkAndExec… method as the last thing
> on the stack.
>
> I build a debug vm (and had some fun with asserts and the ARM fp offset in
> the process, all fixed now) and… it doesn’t fail. I’ve tried
> compiling the plugin with varying levels of optimisation, since we’ve
> fairly regularly seen problems there, and even at -O0 it fails. So debug
> -> OK, no-debug -> boom. Nice.
>
> Ideas?
>
> tim
> --
> tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
> When all else fails, let a = 7.  If that doesn't help, then read the
> manual.
>
>