M. Edward (Ed) Borasky wrote:
> Charles Oliver Nutter wrote:
>> FYI, we're debating making ObjectSpace something you must turn *on* at 
>> command line or through a library call, rather than something you have 
>> to turn off. Practically nothing uses it, and it's a huge perf hit for 
>> JRuby.
>>
> Just a question -- assuming it's off by default, how do you know when 
> you need to turn it on?

We'd print a warning if it's used without being enabled.

- Charlie