GNU bug report logs - #20457
compiler does not warn about arglist mismatch with obsolete alias

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Package: emacs; Reported by: Glenn Morris <rgm@HIDDEN>; dated Wed, 29 Apr 2015 07:09:01 UTC; Maintainer for emacs is bug-gnu-emacs@HIDDEN.

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From: Lars Ingebrigtsen <larsi@HIDDEN>
To: Glenn Morris <rgm@HIDDEN>
Subject: Re: bug#20457: compiler does not warn about arglist mismatch with
 obsolete alias
References: <i48udbxvhc.fsf@HIDDEN>
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Date: Fri, 28 May 2021 02:30:38 +0200
In-Reply-To: <i48udbxvhc.fsf@HIDDEN> (Glenn Morris's message of
 "Wed, 29 Apr 2015 03:08:15 -0400")
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 Content preview: Glenn Morris <rgm@HIDDEN> writes: > warns about oldfunc
 being
 obsolete: > > In blah: > foo.el:6:8:Warning: `oldfunc' is an obsolete function
 (as of 25.1); use > `newfunc' instead. > > however, it says nothing about
 blah calling oldfun [...] 
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Glenn Morris <rgm@HIDDEN> writes:

> warns about oldfunc being obsolete:
>
>   In blah:
>   foo.el:6:8:Warning: `oldfunc' is an obsolete function (as of 25.1); use
>       `newfunc' instead.
>
> however, it says nothing about blah calling oldfunc with the wrong
> number of arguments, which leads to a runtime error.

The problem seems to be more general than that -- it doesn't warn about
the wrong number of arguments, ever, if using aliases?

Test case:

(defun foo ())
(defalias 'bar 'foo)
(defun zot ()
  (bar t))
(defun foobar ()
  (foo t))


----
Compiling file /tmp/warn.el at Fri May 28 02:26:55 2021

In foobar:
warn.el:6:4: Warning: foo called with 1 argument, but accepts only 0
----

Note -- no warning from the zot function.

It seems so odd that nobody has pointed this out before, so I'm
wondering if I'm just doing something obviously wrong in this test
case.  Anybody?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#20457; Package emacs. Full text available.

Message received at 20457 <at> debbugs.gnu.org:


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From: Marcin Borkowski <mbork@HIDDEN>
To: Glenn Morris <rgm@HIDDEN>
Subject: Re: bug#20457: compiler does not warn about arglist mismatch with
 obsolete alias
References: <i48udbxvhc.fsf@HIDDEN>
Date: Fri, 08 Apr 2016 06:56:01 +0200
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 "Wed, 29 Apr 2015 03:08:15 -0400")
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On 2015-04-29, at 03:08, Glenn Morris <rgm@HIDDEN> wrote:

> Package: emacs
> Version: 24.5
>
> Byte-compiling the following:
>     
>     (defun newfunc ()
>       t)
>     
>     (eval-and-compile
>       (define-obsolete-function-alias 'oldfunc 'newfunc "25.1"))
>     
>     (defun blah ()
>       (oldfunc t))
>
> warns about oldfunc being obsolete:
>   
>   In blah:
>   foo.el:6:8:Warning: `oldfunc' is an obsolete function (as of 25.1); use
>       `newfunc' instead.
>
> however, it says nothing about blah calling oldfunc with the wrong
> number of arguments, which leads to a runtime error.

Confirmed on GNU Emacs 25.1.50.8 (1e8cd05).

Best,

-- 
Marcin
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#20457; Package emacs. Full text available.

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Subject: compiler does not warn about arglist mismatch with obsolete alias
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Package: emacs
Version: 24.5

Byte-compiling the following:
    
    (defun newfunc ()
      t)
    
    (eval-and-compile
      (define-obsolete-function-alias 'oldfunc 'newfunc "25.1"))
    
    (defun blah ()
      (oldfunc t))

warns about oldfunc being obsolete:
  
  In blah:
  foo.el:6:8:Warning: `oldfunc' is an obsolete function (as of 25.1); use
      `newfunc' instead.

however, it says nothing about blah calling oldfunc with the wrong
number of arguments, which leads to a runtime error.
Report forwarded to bug-gnu-emacs@HIDDEN:
bug#20457; Package emacs. Full text available.
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