tag 1041415 + upstream
thanks
The error message:
>>Error occurred processing /usr/share/emacs/site-lisp/debian-startup.el: File
>>error (("Doing chmod" "Operation not supported"
>>"/usr/share/emacs/site-lisp/debian-startup.elcFx8oFi"))
comes from the emacs byte compiler. Tracing through the byte compiler,
we find that the error is reported by the call to `set-file-modes` in
`byte-write-target-file`.
set-file-modes is implemented in C, and ultimately results in a call to
`fchmodat`.
`byte-write-target-file` *always* sets the 'nofollow flag when calling
`set-file-modes`, which results in `fchmodat` being called with the
AT_SYMLINK_NOFOLLOW flag.
Unfortunately, documentation for `fchmodat` on Linux indicates:
> AT_SYMLINK_NOFOLLOW
> If pathname is a symbolic link, do not dereference it: instead
> operate on the link itself. This flag is not currently
> implemented.
...and...
> ENOTSUP
> (fchmodat()) flags specified AT_SYMLINK_NOFOLLOW, which is not supported.
ENOTSUP maps to "Operation not supported", which is the error returned
back up the stack.
So this looks like a bug in upstream emacs 28. Will take it there.
--
She's got no name, but she is family.
