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From: Andreas Politz <politza@hochschule-trier.de>
To: 24673@debbugs.gnu.org
Subject: bug#24673: 25.1.50; Evaluating '((closure))' aborts Emacs
Date: Wed, 12 Oct 2016 12:26:24 +0200	[thread overview]
Message-ID: <8760oxoobz.fsf@hochschule-trier.de> (raw)


emacs -Q

M-x ((closure)) RET

=> eval.c:2845: Emacs fatal error: assertion failed: CONSP (fun)

The function takes the (XCAR (XCDR '((closure)))), which is not a good
idea, since XCDR returns Qnil, while XCAR expects a cons. 


static Lisp_Object
funcall_lambda (Lisp_Object fun, ptrdiff_t nargs,
		register Lisp_Object *arg_vector)
{
  ....        
  if (CONSP (fun))
    {
      if (EQ (XCAR (fun), Qclosure))
	{
	  fun = XCDR (fun);	/* Drop `closure'.  */
	  lexenv = XCAR (fun);                 <============ 2845
	  CHECK_LIST_CONS (fun, fun);
	}
        ...
    }
  else ...
}

-ap





             reply	other threads:[~2016-10-12 10:26 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-12 10:26 Andreas Politz [this message]
2016-10-12 20:52 ` bug#24673: 25.1.50; Evaluating '((closure))' aborts Emacs Philipp Stephani
2016-10-13  5:51   ` Eli Zaretskii
2016-10-13 11:13     ` Philipp Stephani
2016-10-12 21:23 ` Robert Cochran

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