bug#13113: 24.3.50; `x-create-frames' raises error trying to eval `directory-files' (???)

[Drew Adams]

> Well, the above snippet calls directory-files later on, which is the
> call that barfed.  This is one API that invokes directory traversal --
> a function that reads and returns all the file names in a directory.
> Another example is directory-files-and-attributes.  Also, any
> file-name completion needs to traverse a directory.  If some Lisp form
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> in the call stack also called one of these functions, you could see
> this "no error" error, according to my reading of the code.

Thx.  As I said:

>> I added a call to `(debug)' in a section of my code that is
>> eval'd during application of a completion function for file names.