bug#18851: 24.4; emacs cannot be started if the current directory has been removed

[Glenn Morris]

Stefan Monnier wrote:

>> IMHO, if the current directory no longer exists, the default-directory
>> of *scratch* can be nil.
>
> Yes, that seems to be the right fix for this problem.
> Of course a default-directory set to nil can cause problems down the
> road, but these are either unavoidable or should likely be fixable.

I installed something along these lines. Now:
    
    mkdir /tmp/foo
    cd /tmp/foo
    rmdir /tmp/foo
    emacs -Q

works for me ~ 10% of the time. The rest of the time it segfaults.

Does someone see what's missing?