Path: csiph.com!xmission!news.snarked.org!news.linkpendium.com!news.linkpendium.com!panix!usenet.stanford.edu!not-for-mail From: pepa65 Newsgroups: gnu.bash.bug Subject: Re: bug in arithmetic expansion Date: Sat, 9 Nov 2019 22:12:51 +0700 Lines: 35 Approved: bug-bash@gnu.org Message-ID: References: <5415801f-6c6e-9664-7747-9adc02a592f8@gsi.de> <11ae0e8c-06c9-673d-b3d0-de1b8760f866@passchier.net> NNTP-Posting-Host: lists.gnu.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: usenet.stanford.edu 1573312390 26650 209.51.188.17 (9 Nov 2019 15:13:10 GMT) X-Complaints-To: action@cs.stanford.edu To: Joern Knoll , bug-bash@gnu.org Envelope-to: bug-bash@gnu.org X-Zone-Loop: e5e0eb6e464ad555126cb7363c02d4653e16ece75073 X-Originating-IP: [168.235.111.26] Openpgp: preference=signencrypt Autocrypt: addr=solusos@passchier.net; keydata= mQINBFjfL8gBEACS/gbEHElY/U03Z70OrsYstUl/0LlFWI3iJxn81XkFA7xN8ni02FWoVA9b lBB1mKmxDiGwsMVYpXAirGZGpkTKWdMFJOw4e7/Vq6SDWif3L4TaFFHquHenROlqRxjPVlHM ZEu94Nt+t+mnvSmiXNmFeL1Rlryuzj8u+9qFkaiUecvUacEaKbF0sJwG51uaCLTUE/HFiJeH vNNTD+Hlo7d4wNCg1lY5CFHOeRcyJ1IhamAsjliew+yuN3l4KxG1V5GAbKHf2O72m36HStRl LL6pGa7VYvOAwstw35dK1Rc8bRW0f9ICdIipc7ijNgE+NFD6gRdbmWPhHI7C0+3DejFUhTwu iMCsUoD5h1u0z/0V28rjBcVcpXLjUVFdAt+JhjBebB1RFVpmqw4D6D0TwahoX/8ixYe3zRTa 2A/lLcdPCFOdqw3d7vv+txbSw7lJNeayoId7P1ZmiSga5zs+mnl+RQch8P5ihIygfZlIOn44 DJx7xScMm5ixcygp1EGWqKePrMsjl71fo6p4S0j+81yuW0U5Q4/WAxBZSzeNq4/CduBKn9fW FIuZfYeSZjy1bxsPyOYLxnt2TE+ldgGIMl5GW6MEtz3FwRPMgtNpSy1Eo07ec899rNUOxeb2 e3FtfLzAcxRoxc5SY9PnfttJvESACBiCAShU4LMMLJKEMfsCIQARAQABtCVQZXRlciBQYXNz Y2hpZXIgPHBldGVyQHBhc3NjaGllci5uZXQ+iQI9BBMBCAAnBQJY3y/IAhsjBQkJZgGABQsJ CAcCBhUICQoLAgQWAgMBAh4BAheAAAoJEA5oUwj0rP2e8aIP/31WesFGDSIzaRFoqXBv9gPx uhMi3pcnfag20a76035E2TohSzQlWQ84gR6Ts5HfbFnazly0/UPIbvWStx1aOe59w46ejYXf xH6LShMuKcYj+W1ywcIO/NtC4SbAtDLTVDMzEhp/8K1q+wq0/+5UnmVdnzdHzmuDE/w39KPh 3YaDigh2aZgLprWxx0g3UVVNESOx8SaulaBFap6ikbp7EmYR4mCBYJ0OJjIRQKt43bGEf/f7 GMedX8131A9v+NsO8gmFDPemefrjISBEoC7ra0sChcNeQqKX8HRkCgCWgF+zIhUX0AsVH7f3 vYUF8lhxIlclZnPSXHCHWUA6cVTghnbVPogFCVjz3sG2zKKEpqG1XuhtOTjALfkdvoenF6Q+ IJGhQArsq+fWDvEyR+fkng3h/wD8JH4yTjjoypKo03SzJXqYKEY3BPhWfNqy9kjgENrTlSJw sxTFT0QVNAt6okiIqHmrfgDe1cuyO+DYZsNe+hqbRhN1eN/4jM18rqZ9i8lp5bs8vhl4f7OK gqaLhhkW1MXhzR4r4/wIY2dNOWQlJk8HV2DVl0LGV7I8P89vC+qJ52uFPHdrPjC9V1Iz27YP IoxKXLM5M9SuOmpZ9VMwJT9HyhwBW4uH0JuNXJiibz5iZJh+UBGtLfonZpwjYyQzkJIpzaNb n5iuq6/YQFwluQINBFjfL8gBEADCEurarLau6Hv/uRybgwg01YB2k3+EjDBzNPq0WzQbE9Xl hwqIXIFLCvgy5u+/dnpbQZkHU9yF8Ash6UrZCcs/cAuH5D3RuJSsoCW9tdNQrB0JJnao1J/S flah3hRzV5xzMoPnamVxslLzzc5qjk7vHhWoYqilaLumCIr6VkVaau+ynB40zexHp4bH3tUm ugTvOJukb3GK5BJ/3us1MDh5fheP4SdaV87qRwJYKpjaAutO0AennlaZzCpoM39rwZMh3j2/ yZEmLdqSQF3dzXv2ZTHxWzoz6EejySDb1DCDb0T25BjBGZLyIcGZQuAdOQvmcA7InPVsP9Gi wz0OzsCg4FBUzNzfsfPb8+JkY+9l6fOq7x1s1zSZ3ketvQ87WLfLhzuQJEVPYNAHNFjCdxY8 nW5lWtn+z7FI883wbcjRp6xoSnXXt51hY0BYevUQke0MMiFJLQxhyri9wxCYIkMIIwHW7Q8C iNFHG5bHAuU6IYe2fG5g/37U6i/2mExX7k2aM8TQk0XraezhKbd9dvYKoweGLpnFNpapIXWZ hjwSH1emfPQ4OZ2T8jHnI1oJfJz00BIMRzwDnVUOfD9+35BEAJZJhTRGOXV2HTzBCXXenWSO 37xglYrJGpsWjQBEgPhRtdHv6TFrbKEFFZOXN1VHi9Qwhw2dBdZLK+CypSNH1wARAQABiQIl BBgBCAAPBQJY3y/IAhsMBQkJZgGAAAoJEA5oUwj0rP2e6vUP/Aw6/gSe6cVl3djCJBut3Sfh ixxV53VzDcb5fMQHx/5D1XqDSAwgFP8FhTYjUTWjZ5MzFleLuv8Q3ZPY4OAztJk95byToGpS xJkBJCzciH5pYpQ7RZmkFLXlux5YLnAao8DMqQdqhcIvINIHOZx8s24K89K6xxOXidg4ZIbN Py53tMZDB18baiD1n4/3X4z/06Ux4wPOB4j3zR0CdGjKECv9l4Dwf1EAKFupvN9ttwQF/4UB W5eQZkGBdwAFXPZ90Z/WMxgeCAkzQ2oWTUS3s19TYbeqCIR+1TBlQZx1g0iHrnGvj5gZH7YG ntDw+cvyF+72thtbyhEjIzqlAE65RyWSoRgfdEDzx0KLl7flv77eK58p7+/9yFtVZ5lj9ckt yrm9okNLnHOwzQhNScqL8MTL3OkHchZe8YxnwMPwx421khVMeQH8kwID/pAbXwagdm3rkHPs 8mOP29kfzk5aOWxYETmTO5AreFhps8D9fIYYk1oUQNqjuiT0TEPIVp9YkUULZwRj34CYbxVA FTQu9ykyJofZsBgj+KCEkenZqamx7ISuOomCu3LsFMaQP7AQbWWUgYPZYSRKqP+ziZBbIQRk pkEeXXNtjfST0zR0rcM9E/Wp9eJLHvUSKGmzkfrOFXA4InSwGvwhNxkDFRgVkK0nAOwn3/BY ehXgcjIoeiMn User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 In-Reply-To: <5415801f-6c6e-9664-7747-9adc02a592f8@gsi.de> Content-Language: en-US X-AuthUser: mxroute@passchier.net X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 160.202.107.78 X-BeenThere: bug-bash@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Bug reports for the GNU Bourne Again SHell List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Mailman-Original-Message-ID: <11ae0e8c-06c9-673d-b3d0-de1b8760f866@passchier.net> X-Mailman-Original-References: <5415801f-6c6e-9664-7747-9adc02a592f8@gsi.de> Xref: csiph.com gnu.bash.bug:15584 In the arithmetic context, leading zeroes signify an octal base. Had you used an 8 or 9, you would have gotten a message like: bash: 08: value too great for base (error token is "08") when trying: echo $((08)) So it's not a bug, it's a feature; make sure your base-10 numbers don't have leading zeroes! Peter On 11/9/19 5:52 PM, Joern Knoll wrote: > Hallo, > > in playing around with digital keys (integers) which have a simple > arithmetic check property, I encountered problemsusing bash's arithmetic > expansion, when ever the used digital substrings have leading zeros. The > problem shows up already for the simplest operations, namely converting > a string argument to its numerical value, as shown below. > > With thanks for your attention and best regards, Jörn Knoll > > [tplx99]:/the/knoll > echo $((0123)) > 83 > [tplx99]:/the/knoll > echo $((123)) > 123 > [tplx99]:/the/knoll > echo $((01234)) > 668 > [tplx99]:/the/knoll > echo $((1234)) > 1234 > >