From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Zefram Newsgroups: gmane.lisp.guile.bugs Subject: bug#26261: ~N mishandles small nanoseconds value Date: Sun, 26 Mar 2017 03:19:24 +0100 Message-ID: <20170326021924.GE6453@fysh.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: blaine.gmane.org 1490494820 13383 195.159.176.226 (26 Mar 2017 02:20:20 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sun, 26 Mar 2017 02:20:20 +0000 (UTC) To: 26261@debbugs.gnu.org Original-X-From: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Sun Mar 26 04:20:17 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 1crxmt-0001zE-Kw for guile-bugs@m.gmane.org; Sun, 26 Mar 2017 04:20:11 +0200 Original-Received: from localhost ([::1]:39340 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1crxms-00015S-Qm for guile-bugs@m.gmane.org; Sat, 25 Mar 2017 22:20:10 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:46181) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1crxml-000158-HP for bug-guile@gnu.org; Sat, 25 Mar 2017 22:20:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1crxmk-00065G-JZ for bug-guile@gnu.org; Sat, 25 Mar 2017 22:20:03 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:46655) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1crxmk-000658-GW for bug-guile@gnu.org; Sat, 25 Mar 2017 22:20:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1crxmk-0006mQ-6r for bug-guile@gnu.org; Sat, 25 Mar 2017 22:20:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Zefram Original-Sender: "Debbugs-submit" Resent-CC: bug-guile@gnu.org Resent-Date: Sun, 26 Mar 2017 02:20:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 26261 X-GNU-PR-Package: guile X-GNU-PR-Keywords: X-Debbugs-Original-To: bug-guile@gnu.org Original-Received: via spool by submit@debbugs.gnu.org id=B.149049477726009 (code B ref -1); Sun, 26 Mar 2017 02:20:02 +0000 Original-Received: (at submit) by debbugs.gnu.org; 26 Mar 2017 02:19:37 +0000 Original-Received: from localhost ([127.0.0.1]:44854 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1crxmK-0006lR-PY for submit@debbugs.gnu.org; Sat, 25 Mar 2017 22:19:36 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:55129) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1crxmK-0006lC-1g for submit@debbugs.gnu.org; Sat, 25 Mar 2017 22:19:36 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1crxmE-0005wf-0I for submit@debbugs.gnu.org; Sat, 25 Mar 2017 22:19:30 -0400 Original-Received: from lists.gnu.org ([2001:4830:134:3::11]:36756) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1crxmD-0005wb-T1 for submit@debbugs.gnu.org; Sat, 25 Mar 2017 22:19:29 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:46100) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1crxmC-00013Y-QS for bug-guile@gnu.org; Sat, 25 Mar 2017 22:19:29 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1crxmC-0005vv-3E for bug-guile@gnu.org; Sat, 25 Mar 2017 22:19:28 -0400 Original-Received: from river6.fysh.org ([2001:41d0:d:20da::2]:37758 helo=river.fysh.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1crxmB-0005vc-U9 for bug-guile@gnu.org; Sat, 25 Mar 2017 22:19:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=fysh.org; s=20170316; h=Content-Type:MIME-Version:Message-ID:Subject:To:From:Date; bh=O8XCLeJgHE1waiO2VtxelrqL8PEQFHtarMoWsjlpPN8=; b=xDcXPtR70YbuQj/GmJau0lVGuwMypDpIZe6W68b5TU6Y5QYLYg4S5Uh8aCzm45UipIjwYlngeyAyeNHsNt1aIcPugPsjaoqepE/WnuA14G/y0bYF3qqP8FCenTRXrrXIr05DOR+a478aWqL/DJdvdS8oWRlNSvinZ+J2aP/ThXM=; Original-Received: from zefram by river.fysh.org with local (Exim 4.84_2 #1 (Debian)) id 1crxm8-000894-Dd; Sun, 26 Mar 2017 03:19:24 +0100 Content-Disposition: inline X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. 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:8723 Archived-At: The ~N format specifier in SRFI-19's date->string is documented to show the nanoseconds value, with zero padding. The documentation explicates further by showing as an example a string of nine zeroes. In fact the implementation only pads to seven digits, and so produces incorrect output for and nanoseconds value in the range [0, 100000000): scheme@(guile-user)> (use-modules (srfi srfi-19)) scheme@(guile-user)> (date->string (make-date 0 5 34 12 26 3 2017 0) "~N") $1 = "0000000" scheme@(guile-user)> (date->string (make-date 2 5 34 12 26 3 2017 0) "~N") $2 = "0000002" scheme@(guile-user)> (date->string (make-date 200 5 34 12 26 3 2017 0) "~N") $3 = "0000200" scheme@(guile-user)> (date->string (make-date 200000 5 34 12 26 3 2017 0) "~N") $4 = "0200000" scheme@(guile-user)> (date->string (make-date 99999999 5 34 12 26 3 2017 0) "~N") $5 = "99999999" scheme@(guile-user)> (date->string (make-date 200000000 5 34 12 26 3 2017 0) "~N") $6 = "200000000" The padding clearly has to be to the full nine digits. -zefram