Re: Which-function-mode is turning itself off

[Richard Stallman]

    I believe this is the original error triggering the other error.

    * error("Error in which-func-update: %s" (error "This buffer cannot use 
`imenu-default-create-index-function'"))

If this means what I think it means, it follows that Which Function mode
cannot possibly work in the *Occur* buffer.  So it turns itself off
in that buffer.

So why is that wrong?  Where is the bug?