[R-sig-ME] Simple bug in lmer: reliably crashes R

[Douglas Bates]

I have just uploaded lme4_0.99875-9 to CRAN's incoming directory.
This version generates an error when trying to fit a model with terms
that reduce to (0|grp).

Thanks for the report.

On 10/13/07, Nathaniel Smith <njs at pobox.com> wrote:
> There seems to be a minor input-validation bug in lme4 0.99875-8,
> where fitting a model with (0 | ...) crashes R.
>
> To reproduce:
>
> > library(lme4)
> > frame <- data.frame(A=1:100, B=1:100, C=rep(1:10, 10)
> > lmer(A ~ B + (0 | C), frame)
> Process R floating point exception at Sat Oct 13 01:26:25 2007
>
> Obviously the workaround is "don't do that then", but it would
> probably be good to fix at some point.