From owner-sc22wg5 Wed Aug 8 10:21:35 2001 Received: from nameserv.rl.ac.uk (nameserv.rl.ac.uk [130.246.135.129]) by dkuug.dk (8.9.2/8.9.2) with ESMTP id KAA77037 for ; Wed, 8 Aug 2001 10:21:35 +0200 (CEST) (envelope-from jkr@jkr.cc.rl.ac.uk) Received: from jkr.cc.rl.ac.uk (jkr.cc.rl.ac.uk [130.246.8.20]) by nameserv.rl.ac.uk (8.8.8/8.8.8) with ESMTP id JAA18539 for ; Wed, 8 Aug 2001 09:21:34 +0100 Received: (from jkr@localhost) by jkr.cc.rl.ac.uk (8.8.8+Sun/8.8.8) id JAA24171 for SC22WG5@dkuug.dk; Wed, 8 Aug 2001 09:23:42 +0100 (BST) Date: Wed, 8 Aug 2001 09:23:42 +0100 (BST) From: John Reid Message-Id: <200108080823.JAA24171@jkr.cc.rl.ac.uk> To: SC22WG5@dkuug.dk Subject: (SC22WG5.2164) Named Scratch Files in Fortran 2000 - Rationale MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" ----- Begin Included Message ----- Date: Tue, 07 Aug 2001 20:04:02 -0500 From: Craig Dedo X-Sequence: SC22WG5@dkuug.dk 2164 Errors-To: SC22WG5-request@dkuug.dk Organization: Elmbrook Computer Services, Inc. X-Mailer: Mozilla 4.72 [en] (WinNT; U) X-Accept-Language: en MIME-Version: 1.0 To: WG5 Mailing List Subject: (SC22WG5.2164) Named Scratch Files in Fortran 2000 - Rationale Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="------------ms6029FACF5E13856E37D4215D" This is a cryptographically signed message in MIME format. --------------ms6029FACF5E13856E37D4215D Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Dear WG5 Members: Today I learned that at the recent meeting, WG5 asked why we included named scratch files in Fortran 2000. According to J3/01-299 (below), there was no knowledge of a rationale. I was the champion for this issue. J3 considered Named Scratch Files at meetings 141 and 142 in May and August 1997. The relevant papers are: * 97-162r2 - May 15, 1997 * 97-193r1 - August 12, 1997 Both of these papers are on the J3 Web site. According to the minutes of meetings 141 and 142, these papers were considered at their respective meetings. J3 never did debate or vote on either the Rationale or the Technical Specification in either of these papers. J3 did debate and vote on the edits at both meetings. At Meeting 141, 97-162r2 was withdrawn for technical reasons. At meeting 142, paper 97-193r1 passed unanimously (edits only). Here is a copy of the Rationale from both papers. [Begin Rationale] Rationale Currently, the Fortran standard does not allow the user to name scratch files. Not allowing the user to name scratch files is an unnecessary irregularity. A named scratch file would be the only kind of named file which would be automatically deleted when the file is closed or execution terminates. Allowing Fortran programmers to give names to scratch files would have several advantages. These advantages include: * This feature would allow the programmer to protect against accidentally overwriting existing files. This could happen if the processor generates a file name which is the same as the name of an existing file. * This feature would allow the programmer to specify a location for the scratch file which has enough space for the scratch file's contents. * The programmer could look at a scratch file's contents during execution. If the processor does not delete scratch files if the program crashes, this feature would allow the programmer to do some post-mortem analysis. [End of Rationale] Please feel free to contact me if you have any questions or concerns. [Begin J3/01-299] J3/01-299 Date: 06 August 2001 To: J3 From: Dan Nagle Subject: Sj Response to a WG5 comment (named scratch files) One of the comments made by WG5 members at the recent London meeting expressed a concern regarding named scratch files. The criticism was that we hadn't thought this through very well. Fortran supports named and unnamed files, unnamed files are made by specifying a status of scratch. Named files are not. A specific question was asked regarding the proper reaction of a program to a named scratch file when the file name already exists. J3 members present were unable to provide a good answer to this question. WG5 expressed its desire to remove named scratch files from the draft. This paper is a vehicle for removing named scratch files from the draft should J3 decide to do so, or alternatively, for replying to WG5 with our reasons why named scratch files should be kept in the draft. To remove named scratch files from the draft: (Yes, I know I need to provide line numbers. Let's see what JoR says before I do it. My pdf version doesn't seem to have line numbers, at least, I haven't found the switch.) EDITS (Restore the normative paragraph discussing the OPEN statement.) [171: (paragraph after the constraints)] Add after the first sentence "If the STATUS= specifier has the value SCRATCH, the FILE= specifier shall not be present." (Restore note in discussion of STATUS=.) [174: (after the second paragraph under STATUS=)] Add the Note "SCRATCH shall not be specified with a named file." [End of J3/01-299] -- ---------- Sincerely, Craig T. Dedo Internet: Craig_Dedo@execpc.com Elmbrook Computer Services, Inc. Voice Phone: (262) 783-5869 17130 W. Burleigh Place Fax Phone: (262) 783-5928 Brookfield, WI 53005-2759 USA "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -- Benjamin Franklin (1759) --------------ms6029FACF5E13856E37D4215D Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature Content-Transfer-Encoding: base64 MIIKpAYJKoZIhvcNAQcCoIIKlTCCCpECAQExCzAJBgUrDgMCGgUAMAsGCSqGSIb3DQEHAaCC CDAwggT6MIIEY6ADAgECAhAiyQes2his52qh4Pqm0PciMA0GCSqGSIb3DQEBBAUAMIHMMRcw FQYDVQQKEw5WZXJpU2lnbiwgSW5jLjEfMB0GA1UECxMWVmVyaVNpZ24gVHJ1c3QgTmV0d29y azFGMEQGA1UECxM9d3d3LnZlcmlzaWduLmNvbS9yZXBvc2l0b3J5L1JQQSBJbmNvcnAuIEJ5 IFJlZi4sTElBQi5MVEQoYyk5ODFIMEYGA1UEAxM/VmVyaVNpZ24gQ2xhc3MgMSBDQSBJbmRp dmlkdWFsIFN1YnNjcmliZXItUGVyc29uYSBOb3QgVmFsaWRhdGVkMB4XDTAxMDMxMzAwMDAw MFoXDTAyMDMxMzIzNTk1OVowggEVMRcwFQYDVQQKEw5WZXJpU2lnbiwgSW5jLjEfMB0GA1UE CxMWVmVyaVNpZ24gVHJ1c3QgTmV0d29yazFGMEQGA1UECxM9d3d3LnZlcmlzaWduLmNvbS9y ZXBvc2l0b3J5L1JQQSBJbmNvcnAuIGJ5IFJlZi4sTElBQi5MVEQoYyk5ODEeMBwGA1UECxMV UGVyc29uYSBOb3QgVmFsaWRhdGVkMTMwMQYDVQQLEypEaWdpdGFsIElEIENsYXNzIDEgLSBO ZXRzY2FwZSBGdWxsIFNlcnZpY2UxFjAUBgNVBAMUDUNyYWlnIFQuIERlZG8xJDAiBgkqhkiG 9w0BCQEWFWNyYWlnX2RlZG9AZXhlY3BjLmNvbTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkC gYEAsTyuT8v6scC1fICw8tgnXqKEQC3sq5N+zWrKqEqLUq5jkg2chvf7/Rnt3YHlUqfQ888C nwan8wBGdHPn/qJcUA9NI/npiKWxtVwebpoVlaprSOq5uAitzkLJf5U/pYhLqi/SnVayV9WD XGGweWjFJ5brn8a/H1IpZ9tspaoosMMCAwEAAaOCAY8wggGLMAkGA1UdEwQCMAAwgawGA1Ud IASBpDCBoTCBngYLYIZIAYb4RQEHAQEwgY4wKAYIKwYBBQUHAgEWHGh0dHBzOi8vd3d3LnZl cmlzaWduLmNvbS9DUFMwYgYIKwYBBQUHAgIwVjAVFg5WZXJpU2lnbiwgSW5jLjADAgEBGj1W ZXJpU2lnbidzIENQUyBpbmNvcnAuIGJ5IHJlZmVyZW5jZSBsaWFiLiBsdGQuIChjKTk3IFZl cmlTaWduMBEGCWCGSAGG+EIBAQQEAwIHgDCBhgYKYIZIAYb4RQEGAwR4FnZkNDY1MmJkNjNm MjA0NzAyOTI5ODc2M2M5ZDJmMjc1MDY5YzczNTliZWQxYjA1OWRhNzViYzRiYzk3MDE3NDdk YTVkM2YyMTQxYmVhY2UzOGMyZjg4NzBiYWY2Y2Y0ZGUxMTQ5OTZhMWJhNDdmOWYzZWE0NTBj MDMGA1UdHwQsMCowKKAmoCSGImh0dHA6Ly9jcmwudmVyaXNpZ24uY29tL2NsYXNzMS5jcmww DQYJKoZIhvcNAQEEBQADgYEANcq/88DWti/aQMuOgHgVVR5H+4Vud+7B9e3wUU3shOKKcIM6 W62L0h5xURLhkEcUfLDVo1+pg8HFLO95ZzwAPxQEUt86tniM3cJy/p182HchRRHWQCsv2nR1 HG03wloj9uRi9xbfpkihN54Bfljr3qW8nuiEnSv4M7SueymVsj0wggMuMIICl6ADAgECAhEA 0nYujRQMPX2yqCVdr+4NdTANBgkqhkiG9w0BAQIFADBfMQswCQYDVQQGEwJVUzEXMBUGA1UE ChMOVmVyaVNpZ24sIEluYy4xNzA1BgNVBAsTLkNsYXNzIDEgUHVibGljIFByaW1hcnkgQ2Vy dGlmaWNhdGlvbiBBdXRob3JpdHkwHhcNOTgwNTEyMDAwMDAwWhcNMDgwNTEyMjM1OTU5WjCB zDEXMBUGA1UEChMOVmVyaVNpZ24sIEluYy4xHzAdBgNVBAsTFlZlcmlTaWduIFRydXN0IE5l dHdvcmsxRjBEBgNVBAsTPXd3dy52ZXJpc2lnbi5jb20vcmVwb3NpdG9yeS9SUEEgSW5jb3Jw LiBCeSBSZWYuLExJQUIuTFREKGMpOTgxSDBGBgNVBAMTP1ZlcmlTaWduIENsYXNzIDEgQ0Eg SW5kaXZpZHVhbCBTdWJzY3JpYmVyLVBlcnNvbmEgTm90IFZhbGlkYXRlZDCBnzANBgkqhkiG 9w0BAQEFAAOBjQAwgYkCgYEAu1pEigQWu1X9A3qKLZRPFXg2uA1Ksm+cVL+86HcqnbnwaLuV 2TFBcHqBS7lIE1YtxwjhhEKrwKKSq0RcqkLwgg4C6S/7wju7vsknCl22sDZCM7VuVIhPh0q/ Gdr5FegPh7Yc48zGmo5/aiSS4/zgZbqnsX7vyds3ashKyAkG5JkCAwEAAaN8MHowEQYJYIZI AYb4QgEBBAQDAgEGMEcGA1UdIARAMD4wPAYLYIZIAYb4RQEHAQEwLTArBggrBgEFBQcCARYf d3d3LnZlcmlzaWduLmNvbS9yZXBvc2l0b3J5L1JQQTAPBgNVHRMECDAGAQH/AgEAMAsGA1Ud DwQEAwIBBjANBgkqhkiG9w0BAQIFAAOBgQCIuDc73dqUNwCtqp/hgQFxHpJqbS/28Z3TymQ4 3BuYDAeGW4UVag+5SYWklfEXfWe0fy0s3ZpCnsM+tI6q5QsG3vJWKvozx74Z11NMw73I4xe1 pElCY+zCphcPXVgaSTyQXFWjZSAA/Rgg5V+CprGoksVYasGNAzzrw80FopCubjGCAjwwggI4 AgEBMIHhMIHMMRcwFQYDVQQKEw5WZXJpU2lnbiwgSW5jLjEfMB0GA1UECxMWVmVyaVNpZ24g VHJ1c3QgTmV0d29yazFGMEQGA1UECxM9d3d3LnZlcmlzaWduLmNvbS9yZXBvc2l0b3J5L1JQ QSBJbmNvcnAuIEJ5IFJlZi4sTElBQi5MVEQoYyk5ODFIMEYGA1UEAxM/VmVyaVNpZ24gQ2xh c3MgMSBDQSBJbmRpdmlkdWFsIFN1YnNjcmliZXItUGVyc29uYSBOb3QgVmFsaWRhdGVkAhAi yQes2his52qh4Pqm0PciMAkGBSsOAwIaBQCggbEwGAYJKoZIhvcNAQkDMQsGCSqGSIb3DQEH ATAcBgkqhkiG9w0BCQUxDxcNMDEwODA4MDEwNDAyWjAjBgkqhkiG9w0BCQQxFgQUDekFUCsA 48B4Cmve0p2NLgNBaWEwUgYJKoZIhvcNAQkPMUUwQzAKBggqhkiG9w0DBzAOBggqhkiG9w0D AgICAIAwBwYFKw4DAgcwDQYIKoZIhvcNAwICAUAwDQYIKoZIhvcNAwICASgwDQYJKoZIhvcN AQEBBQAEgYCTbRPvqA2YGvUUk6X+cIFsuPo+h5yWw2FCTWKj3Ikqa50EZlViadQ+USmYg5yY idbHZKaME6ytKFk1QKyPkDSJHaSoarE7FA1hIXr3VBWxfpb1HHsgd2M9QZmNUNiVrnhWn/5o yvGVnZlNTbL5+/adC6xk80J43ruvAAJRNWdo6g== --------------ms6029FACF5E13856E37D4215D-- ----- End Included Message -----