One more thing I forgot: region based MM is not only unsafer than
alloc/dealloc, it can also easily produce enormous space leaks that are much
worse than the usual factor of 2-3 in memory consumption that tracing GC
technology requires:
withRegion r:
while tooLong:
allocMemFrom r
Run
Yes, yes, you simply free all the memory after a "request" or at the end of
your "frame", you don't need a GC for that. Except, that you didn't actually
solve the problem as the peak memory consumption can be unbounded. Memory
management is hard and `--gc:arc/orc` is the best tunable, general purpose
strategy around, all things considered.
