Joel Brobecker wrote:
>> Hmmm, how about if I initialize mem1start etc. to -1?
>> Then the rest of the tests will fail but not crash.
>> Is that better?
> 
> Yep, that would work for me. You could also do something like this:
> 
>     if {![info exists mem1start] || ![info exists mem2start] ...} {
>         fail "..."
>         # No point in continuing the rest of the testcase if we couldn't
>         # get the addresses we need bla bla bla.
>         return
>     }
> 

OK, committed as below.