Fix byte compilation of files with leading directories

* lisp/emacs-lisp/bytecomp.el (byte-compile-file): Pass basename
of target-file to make-temp-file, in case target-file includes a
leading directory that might not exist under TMPDIR.  See
http://lists.gnu.org/archive/html/emacs-devel/2017-11/msg00680.html
for the details.

diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el
index e5a1ea782e8a388a6dcb9051e4d0dd807701057d..f69ac7f342a3629216ef3ec200fce7dde1c9ce40 100644 (file)
--- a/lisp/emacs-lisp/bytecomp.el
+++ b/lisp/emacs-lisp/bytecomp.el
@@ -1931,7 +1931,8 @@ The value is non-nil if there were no errors, nil if errors."
                       ;; process is trying to load target-file (eg in a
                       ;; parallel bootstrap), it does not risk getting a
                       ;; half-finished file.  (Bug#4196)
-                      (tempfile (make-temp-file target-file))
+                      (tempfile
+                        (make-temp-file (file-name-nondirectory target-file)))
                       (default-modes (default-file-modes))
                       (temp-modes (logand default-modes #o600))
                       (desired-modes (logand default-modes #o666))