scratch/bug#48029 8be8f088d1 1/2: Mark async worker tmp file as utf-8-emacs-unix (bug#48029)

[Andrea Corallo]

branch: scratch/bug#48029
commit 8be8f088d1c664818d59df71438a10acbd43a727
Author: Andrea Corallo <akrl@sdf.org>
Commit: Andrea Corallo <akrl@sdf.org>

    Mark async worker tmp file as utf-8-emacs-unix (bug#48029)
    
    * lisp/emacs-lisp/comp.el (comp-final): Mark async worker tmp file
    as utf-8.
    * test/src/comp-tests.el (48029-1): New test.
    * test/src/comp-resources/comp-test-funcs.el
    (comp-test-48029-nonascii-žžž-f): New function.
---
 lisp/emacs-lisp/comp.el                    | 2 +-
 test/src/comp-resources/comp-test-funcs.el | 2 ++
 test/src/comp-tests.el                     | 5 +++++
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/lisp/emacs-lisp/comp.el b/lisp/emacs-lisp/comp.el
index 73285e0f24..31566dd869 100644
--- a/lisp/emacs-lisp/comp.el
+++ b/lisp/emacs-lisp/comp.el
@@ -3693,7 +3693,7 @@ Prepare every function for final compilation and drive 
the C back-end."
                                 (file-name-base output) "-")
                         nil ".el")))
        (with-temp-file temp-file
-          (insert ";; -*-coding: nil; -*-\n")
+          (insert ";; -*-coding: utf-8-emacs-unix; -*-\n")
           (mapc (lambda (e)
                   (insert (prin1-to-string e)))
                 expr))
diff --git a/test/src/comp-resources/comp-test-funcs.el 
b/test/src/comp-resources/comp-test-funcs.el
index 0a60f4d6cc..9092f040c8 100644
--- a/test/src/comp-resources/comp-test-funcs.el
+++ b/test/src/comp-resources/comp-test-funcs.el
@@ -515,6 +515,8 @@
 (defun comp-test-47868-4-f ()
   #(" " 0 1 (face font-lock-keyword-face)))
 
+(defun comp-test-48029-nonascii-žžž-f (arg)
+  (when arg t))
 
 
 ;;;;;;;;;;;;;;;;;;;;
diff --git a/test/src/comp-tests.el b/test/src/comp-tests.el
index e7b534d00e..c7e81298d2 100644
--- a/test/src/comp-tests.el
+++ b/test/src/comp-tests.el
@@ -532,6 +532,11 @@ 
https://lists.gnu.org/archive/html/bug-gnu-emacs/2020-03/msg00914.html.";
   (should (eq (comp-test-47868-1-f) (comp-test-47868-3-f)))
   (should (eq (comp-test-47868-2-f) (comp-test-47868-4-f))))
 
+(comp-deftest 48029-1 ()
+  "<https://lists.gnu.org/archive/html/bug-gnu-emacs/2022-07/msg00666.html>"
+  (should (subr-native-elisp-p
+           (symbol-function 'comp-test-48029-nonascii-žžž-f))))
+
 
 ;;;;;;;;;;;;;;;;;;;;;
 ;; Tromey's tests. ;;