From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Alejandro Sanchez Newsgroups: gmane.lisp.guile.bugs Subject: bug#26106: Defining a method named '-' with one parameter Date: Wed, 15 Mar 2017 14:35:18 +0100 Message-ID: NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1489584979 459 195.159.176.226 (15 Mar 2017 13:36:19 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 15 Mar 2017 13:36:19 +0000 (UTC) To: 26106@debbugs.gnu.org Original-X-From: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Wed Mar 15 14:36:14 2017 Return-path: Envelope-to: guile-bugs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1co963-0007tv-0h for guile-bugs@m.gmane.org; Wed, 15 Mar 2017 14:36:11 +0100 Original-Received: from localhost ([::1]:37291 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1co969-000145-1f for guile-bugs@m.gmane.org; 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d=openmailbox.org; s=openmailbox; t=1489584920; bh=kciHN1U75kjh7/uxXa4uZ1rzOM+MU8JAsXE4SQwzfa4=; h=From:Subject:Date:To:From; b=ZBeqhOJsEGieyEWNNbvIUIdbU1U8sdb4AcCoYA1kaYlRTY291E2bBqc2lbpTfyn9G dfZnLCyCpae0uHKYMQNzmQUr7LUAe4UVbTC13yLdTbO+ZHTPescmCSmdBfbT53fY/T NQP2IcBwzZTJTvr9ZxhfMhM5TClkgVrCWFqaJG9c= X-Mailer: Apple Mail (2.3124) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-guile@gnu.org List-Id: "Bug reports for GUILE, GNU's Ubiquitous Extension Language" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Original-Sender: "bug-guile" Xref: news.gmane.org gmane.lisp.guile.bugs:8686 Archived-At: If I define a method named =E2=80=98-=E2=80=98 which only takes in one = parameter, the expression =E2=80=98(- v)=E2=80=99 gets rewritten to = =E2=80=98(- 0 v)=E2=80=99. Here is a minimal example: (use-modules (oop goops)) =09 (define-class () (x #:init-value 0 #:getter get-x #:init-keyword #:x) (y #:init-value 0 #:getter get-y #:init-keyword #:y)) =09 (define-method (* (n ) (v )) (make #:x (* n (get-x v)) #:y (* n (get-y v)))) =09 (define-method (- (v )) (* -1 v)) =09 (define v (make #:x 1 #:y 2)) (* -1 v) ; Works fine (- v) ; Throws error Here is the error message: scheme@(guile-user)> (- v) ERROR: In procedure scm-error: ERROR: No applicable method for #< - (2)> in call (- 0 = #< 10a8e4020>) =09 Entering a new prompt. Type `,bt' for a backtrace or `,q' to = continue. scheme@(guile-user) [1]> ,bt In current input: 23:0 2 (_) In oop/goops.scm: 1438:4 1 (cache-miss 0 #< 10a8e4020>) In unknown file: 0 (scm-error goops-error #f "No applicable method for = ~S in call ~S" (#< - (2)> (- 0 #<)) #)