[datatable-help] Random segfaults

[Chris Neff]

>
> Only other thought ... your special internal build of R ... does it
> increase R_len_t on 64bit to allow longer vectors than 2^31, by any
> chance?  I've used R_len_t quite a bit in data.table to future proof for
> when that happens, but if you've done it already in your build then that
> would help to know since it's never been tested afaik when R_len_t != int
> on 64bit.  I'm also assuming R_len_t is signed. If your R has R_len_t as
> unsigned would need to know.

Answer to this is no, we haven't touched that.

I'm happy to keep helping, but if you'd rather not worry about that
stuff, we will be upgrading to 2.14 in the next few months apparently,
and I can live with 1.7.1 until then.