bug#15862: Status: aliases to macros at compile time

bug#15862: Status: aliases to macros at compile time

[Lars Ingebrigtsen]

This bug report also comes out blank in the mbox interface, but is
displayed on the web.

[...]

-----

(defvar foo-var 0)

(defmacro foo-mac ()
  '(setq foo-var (1+ foo-var)))

(define-obsolete-function-alias 'old-mac #'foo-mac "24.4")

(defun foo-fails ()
  (old-mac))

(defun foo-works ()
  (foo-mac))


Compile:
foo.el:13:4:Warning: the function `foo-mac' is not known to be defined.

Load compiled version:
(foo-fails) ; -> (invalid-function old-mac)


Also, neither version warns that old-mac is obsolete.

I see now that

(eval-and-compile
  (define-obsolete-function-alias 'old-mac #'foo-mac "24.4"))

works. So maybe that should happen automatically at top-level.


[...]

Fixed the obsolescence warning in 5e6fb1e (auto eval-and-compile make-obsolete.
The invalid function issue remains (still need to manaully eval
top-level aliases to macros at compile-time).

-----

Then I compile it in Emacs 27, I get:

Compiling file /tmp/c.el at Mon Oct  7 17:45:55 2019

In foo-fails:
c.el:9:4:Warning: ‘old-mac’ is an obsolete function (as of 24.4); use
    ‘foo-mac’ instead.

Which seems correct.

If I then

(load "/tmp/c.elc")

I don't get anything about invalid functions.  So has this been fixed,
or am I misinterpreting what the invalid function issue is?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#15862: Status: aliases to macros at compile time

[Stefan Kangas]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> I don't get anything about invalid functions.  So has this been fixed,
> or am I misinterpreting what the invalid function issue is?

More information was requested, but none was given within 6 months, so
I'm closing this bug.

If this is still an issue, please reply to this email (use "Reply to
all" in your email client) and we can reopen the bug report.

Best regards,
Stefan Kangas

bug#15862: Status: aliases to macros at compile time

[Glenn Morris]

The invalid function issue remains.

As in the original report:
Compile the file, load the compiled version, *then evaluate: (foo-fails)*.

bug#15862: aliases to macros at compile time

[Lars Ingebrigtsen]

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Glenn Morris <rgm@gnu.org> writes:

> The invalid function issue remains.
>
> As in the original report:
> Compile the file, load the compiled version, *then evaluate: (foo-fails)*.

I can confirm that this issue is still present in Emacs 29.

To reproduce, save the file, byte-compile it and say

M-: (foo-fails)

Debugger entered--Lisp error: (invalid-function old-mac)
  old-mac()
  foo-fails()
  eval-expression((foo-fails) nil nil 127)
  funcall-interactively(eval-expression (foo-fails) nil nil 127)
  command-execute(eval-expression)

Perhaps Stefan M has some comments; added to the CCs.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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