Hi Armin,

Thanks for the help! It seems like the problem is that somewhere in my code, I called .set_rbflags(x), and it's not checked that x is a dict.

Frank

On Fri, Jan 13, 2017 at 6:36 AM, Armin Rigo <armin.rigo@gmail.com> wrote:

Re-hi,

On 13 January 2017 at 12:34, Armin Rigo <armin.rigo@gmail.com> wrote:
> says: you are storing in the rb_flags attribute something that is
> sometimes a dict, and sometimes an instance of W_Root.

Another potential reason would be that there is one buggy call
somewhere that calls .set_rbflags(x) where x is an instance of W_Root
instead of a dictionary.

A bientôt,

Armin.