Validate Failures

[Simon Peyton Jones]

| Finally, simpl015 is a test that does only sometimes fail. It uses on
| my box an estimated 2GB of memory, and when I haven't anything else
| memory-hungry running, it passes, but when I have (as I do by default)
| SeaMonkey running (with tons of open tabs), my box quasi-freezes, the
| test times out, and the browser is OOM-killed.

Yes that's really a bug, thanks. I have opened #9020.

Simon