Paul Eggert wrote:
> Alan Third wrote:
>> Only with symlinks faccessat returns success if it’s pointing to a
>> file and you put ‘/’ on the end.
> 
> This is a well-known problem on macOS, and Emacs is supposed to compile a 
> replacement fstatat function

Whoops, you were writing about faccessat whereas I was thinking about fstatat. 
Please ignore my previous email, and sorry about the confusion.

Apparently macOS faccessat has a problem similar to fstatat. Gnulib did not work 
around the faccessat problem, so I wrote and installed a fix for this into 
Gnulib and installed the attached patch into the emacs-26 branch. Please give it 
a try.