From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by sourceware.org (Postfix) with ESMTPS id 99DC03858D20 for ; Thu, 18 Apr 2024 05:30:10 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 99DC03858D20 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=SystematicSW.ab.ca Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=SystematicSW.ab.ca ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 99DC03858D20 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=216.40.44.10 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1713418213; cv=none; b=rTMeplv05X6+c3ntGPSWWDnE6djKaY4Qg+mEyTkGPTO0b0FvtaOCy5M6ZinPwVgPh1rLunJfAwHus78UuvzpWMPejGe4KNa1UUTswf581jhFedNmg9RzS+rB2dmIczYLU4WOlPYM0TB03KHgdvxo786C1Xke0/qxv+5bf7TmJec= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1713418213; c=relaxed/simple; bh=C3K14d/ZAjiiPfTcRzFtPqx0OuyB926GxG9j0M5Czv8=; h=Message-ID:Date:MIME-Version:Subject:To:From; b=u1Y+sVHHM8nas/hwy5b56AEi9XKIigBtholxFq0s4Y7HIotsgC3XiaNBn7xhlMPZ3rkPfbZI1POHbtILOCrxAxoKaVgoVBSXKvGmQAbkA2XSpoxtM2Fp2PUjph6ze26E1rAXyKDVw8y0xktc+892PNiXrleKDapXLjLebRkfX50= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from omf15.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id BA59B410DB for ; Thu, 18 Apr 2024 05:30:09 +0000 (UTC) Received: from [HIDDEN] (Authenticated sender: Brian.Inglis@SystematicSW.ab.ca) by omf15.hostedemail.com (Postfix) with ESMTPA id 429011C for ; Thu, 18 Apr 2024 05:30:08 +0000 (UTC) Message-ID: Date: Wed, 17 Apr 2024 23:30:07 -0600 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Reply-To: cygwin@cygwin.com Subject: Re: tzdata bug? Content-Language: en-CA To: cygwin@cygwin.com References: <36001589.119195.1713339202522.ref@mail.yahoo.com> <36001589.119195.1713339202522@mail.yahoo.com> From: Brian Inglis Organization: Systematic Software In-Reply-To: <36001589.119195.1713339202522@mail.yahoo.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 429011C X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,KAM_DMARC_STATUS,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_PASS,SPF_PASS,TXREP,UNPARSEABLE_RELAY autolearn=ham autolearn_force=no version=3.4.6 X-Stat-Signature: 3u831zu43op98dydmi8pxe3gku161hc3 X-Rspamd-Server: rspamout01 X-Session-Marker: 427269616E2E496E676C69734053797374656D6174696353572E61622E6361 X-Session-ID: U2FsdGVkX19Zd61O3Vmbu7qvmxGTxvE37PoHoaPE1sA= X-HE-Tag: 1713418208-12367 X-HE-Meta: U2FsdGVkX1/zAVOKNmo+Hw2a824QKqULn1bf9ebb5KNMQmiXh1M8ZwFd7jUp3npQ0ANxkcFH2mFDUCZaLTwBPv77pHleqbuUQLJzZbKw3VQdm5PVkYgGnPgdewb/6IvYQdyiplIfhRVHM2wzPJ9mpsJKQ+B/fmRMnD9H9zaMtljXSiJWYMi4SufgztvCWKCC/S3D3tulq1SZMR0N4RH5SxMwrpO4RT/dllJG52TxS+hOHC+ejHiC7q9nvjzh/81Xw76HXxcrrMwxnjTOsy+jmdMKnBPjaKPxqwLWKltPRL67e1JY2k++1aCyy5BHp0zWjzUYO3GS1HoEI8p1cJuYIVWie+2gnp5f X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On 2024-04-17 01:33, alf salte via Cygwin wrote: > The man 5 tzfile page says that data should be in big endian format but when I inspect a tzfile on my system it seems that the second part with 8 byte integers are in little endian format rather than the big endian that the man page says it should be. > Is this intentional or is it a bug? What are you using to inspect the file? If you are using vim's xxd, remember that it defaults to big-endian format! If you check 0x2c bytes after 2nd TZif# header, many files will have entries ffffffffxxxxxxxx in increasing order to 00000000xxxxxxxx; for example: $ xxd -s 0x537 -l 0x2c -g4 /usr/share/zoneinfo/Europe/London 00000537: 545a6966 32000000 00000000 00000000 TZif2........... 00000547: 00000000 00000008 00000008 00000000 ................ 00000557: 000000f2 00000008 00000011 ............ $ xxd -s 0x563 -l 0x790 -g8 /usr/share/zoneinfo/Europe/London 00000563: ffffffff1a5d09cb ffffffff9b26ada0 .....].......&.. 00000573: ffffffff9bd60520 ffffffff9ccf30a0 ....... ......0. 00000583: ffffffff9da4c3a0 ffffffff9e9c9da0 ................ 00000593: ffffffff9f971aa0 ffffffffa085ba20 ............... 000005a3: ffffffffa176fca0 ffffffffa2659c20 .....v.......e. 000005b3: ffffffffa37bc8a0 ffffffffa44eb8a0 .....{.......N.. 000005c3: ffffffffa53ffb20 ffffffffa6256020 .....?. .....%` 000005d3: ffffffffa727c620 ffffffffa82a2c20 .....'. .....*, 000005e3: ffffffffa8ebf8a0 ffffffffaa00d3a0 ................ 000005f3: ffffffffaad51520 ffffffffabe9f020 ....... ....... 00000603: ffffffffacc76c20 ffffffffadc9d220 ......l ....... 00000613: ffffffffaea74e20 ffffffffafa079a0 ......N ......y. 00000623: ffffffffb0873020 ffffffffb192d0a0 ......0 ........ 00000633: ffffffffb2704ca0 ffffffffb372b2a0 .....pL......r.. 00000643: ffffffffb4502ea0 ffffffffb5495a20 .....P.......IZ 00000653: ffffffffb63010a0 ffffffffb73276a0 .....0.......2v. 00000663: ffffffffb80ff2a0 ffffffffb91258a0 ..............X. 00000673: ffffffffb9efd4a0 ffffffffbae90020 ............... 00000683: ffffffffbbd8f120 ffffffffbcdb5720 ....... ......W 00000693: ffffffffbdb8d320 ffffffffbeb1fea0 ....... ........ 000006a3: ffffffffbf98b520 ffffffffc09b1b20 ....... ....... 000006b3: ffffffffc1789720 ffffffffc27afd20 .....x. .....z. 000006c3: ffffffffc3587920 ffffffffc451a4a0 .....Xy .....Q.. 000006d3: ffffffffc5385b20 ffffffffc63ac120 .....8[ .....:. 000006e3: ffffffffc758d6a0 ffffffffc7da09a0 .....X.......... 000006f3: ffffffffca162690 ffffffffca975990 ......&.......Y. 00000703: ffffffffcbd11e90 ffffffffcc773b90 .............w;. 00000713: ffffffffcdb10090 ffffffffce605810 .............`X. 00000723: ffffffffcf90e290 ffffffffd06e5e90 .............n^. 00000733: ffffffffd1721610 ffffffffd1fb3210 .....r........2. 00000743: ffffffffd269fe20 ffffffffd36329a0 .....i. .....c). 00000753: ffffffffd449e020 ffffffffd51e21a0 .....I. ......!. 00000763: ffffffffd542fd90 ffffffffd5dfe010 .....B.......... 00000773: ffffffffd64eac20 ffffffffd6fe03a0 .....N. ........ 00000783: ffffffffd82e8e20 ffffffffd8f99520 ....... ....... 00000793: ffffffffda0e7020 ffffffffdaebec20 ......p ....... 000007a3: ffffffffdbe517a0 ffffffffdccbce20 ............... 000007b3: ffffffffddc4f9a0 ffffffffdeb4eaa0 ................ 000007c3: ffffffffdfae1620 ffffffffe094cca0 ....... ........ 000007d3: ffffffffe17248a0 ffffffffe26b7420 .....rH......kt 000007e3: ffffffffe3522aa0 ffffffffe45490a0 .....R*......T.. 000007f3: ffffffffe5320ca0 ffffffffe63dad20 .....2.......=. 00000803: ffffffffe71b2920 ffffffffe81454a0 ......) ......T. 00000813: ffffffffe8fb0b20 ffffffffe9fd7120 ....... ......q 00000823: ffffffffeadaed20 ffffffffebdd5320 ....... ......S 00000833: ffffffffecbacf20 ffffffffedb3faa0 ....... ........ 00000843: ffffffffee9ab120 ffffffffef8167a0 ....... ......g. 00000853: fffffffff09f7d20 fffffffff16149a0 ......} .....aI. 00000863: fffffffff27f5f20 fffffffff34a6620 ......_ .....Jf 00000873: fffffffff45f4120 fffffffff5210da0 ....._A .....!.. 00000883: fffffffff63f2320 fffffffff700efa0 .....?# ........ 00000893: fffffffff81f0520 fffffffff8e0d1a0 ....... ........ 000008a3: fffffffff9fee720 fffffffffac0b3a0 ....... ........ 000008b3: fffffffffbe803a0 fffffffffc7baba0 .............{.. 000008c3: fffffffffdc7bb70 000000000370c620 .......p.....p. 000008d3: 0000000004295820 000000000550a820 .....)X .....P. 000008e3: 0000000006093a20 0000000007308a20 ......: .....0. 000008f3: 0000000007e91c20 0000000009106c20 ....... ......l 00000903: 0000000009c8fe20 000000000af04e20 ....... ......N 00000913: 000000000bb21aa0 000000000cd03020 ..............0 00000923: 000000000d91fca0 000000000eb01220 ............... 00000933: 000000000f71dea0 0000000010992ea0 .....q.......... 00000943: 000000001151c0a0 00000000127910a0 .....Q.......y.. 00000953: 000000001331a2a0 000000001458f2a0 .....1.......X.. 00000963: 000000001523eb90 000000001638c690 .....#.......8.. 00000973: 000000001703cd90 000000001818a890 ................ 00000983: 0000000018e3af90 0000000019f88a90 ................ 00000993: 000000001ac39190 000000001be1a710 ................ 000009a3: 000000001cacae10 000000001dc18910 ................ 000009b3: 000000001e8c9010 000000001fa16b10 ..............k. 000009c3: 00000000206c7210 0000000021814d10 .... lr.....!.M. 000009d3: 00000000224c5410 0000000023612f10 ...."LT.....#a/. 000009e3: 00000000242c3610 00000000254a4b90 ....$,6.....%JK. 000009f3: 00000000260c1810 00000000272a2d90 ....&.......'*-. 00000a03: 0000000027f53490 00000000290a0f90 ....'.4.....)... 00000a13: 0000000029d51690 000000002ae9f190 ....).......*... 00000a23: 000000002bb4f890 000000002cc9d390 ....+.......,... 00000a33: 000000002d94da90 000000002ea9b590 ....-........... 00000a43: 000000002f74bc90 0000000030899790 ..../t......0... 00000a53: 00000000315dd910 000000003272b410 ....1]......2r.. 00000a63: 00000000333dbb10 0000000034529610 ....3=......4R.. 00000a73: 00000000351d9d10 0000000036327810 ....5.......62x. 00000a83: 0000000036fd7f10 00000000381b9490 ....6.......8... 00000a93: 0000000038dd6110 0000000039fb7690 ....8.a.....9.v. 00000aa3: 000000003abd4310 000000003bdb5890 ....:.C.....;.X. 00000ab3: 000000003ca65f90 000000003dbb3a90 ....<._.....=.:. 00000ac3: 000000003e864190 000000003f9b1c90 ....>.A.....?... 00000ad3: 0000000040662390 0000000041843910 ....@f#.....A.9. 00000ae3: 0000000042460590 0000000043641b10 ....BF......Cd.. 00000af3: 000000004425e790 000000004543fd10 ....D%......EC.. 00000b03: 000000004605c990 000000004723df10 ....F.......G#.. 00000b13: 0000000047eee610 000000004903c110 ....G.......I... 00000b23: 0000000049cec810 000000004ae3a310 ....I.......J... 00000b33: 000000004baeaa10 000000004cccbf90 ....K.......L... 00000b43: 000000004d8e8c10 000000004eaca190 ....M.......N... 00000b53: 000000004f6e6e10 00000000508c8390 ....Onn.....P... 00000b63: 0000000051578a90 00000000526c6590 ....QW......Rle. 00000b73: 0000000053376c90 00000000544c4790 ....S7l.....TLG. 00000b83: 0000000055174e90 00000000562c2990 ....U.N.....V,). 00000b93: 0000000056f73090 0000000058154610 ....V.0.....X.F. 00000ba3: 0000000058d71290 0000000059f52810 ....X.......Y.(. 00000bb3: 000000005ab6f490 000000005bd50a10 ....Z.......[... 00000bc3: 000000005ca01110 000000005db4ec10 ....\.......]... 00000bd3: 000000005e7ff310 000000005f94ce10 ....^......._... 00000be3: 00000000605fd510 00000000617dea90 ....`_......a}.. 00000bf3: 00000000623fb710 00000000635dcc90 ....b?......c].. 00000c03: 00000000641f9910 00000000653dae90 ....d.......e=.. 00000c13: 000000006608b590 00000000671d9090 ....f.......g... 00000c23: 0000000067e89790 0000000068fd7290 ....g.......h.r. 00000c33: 0000000069c87990 000000006add5490 ....i.y.....j.T. 00000c43: 000000006ba85b90 000000006cc67110 ....k.[.....l.q. 00000c53: 000000006d883d90 000000006ea65310 ....m.=.....n.S. 00000c63: 000000006f681f90 0000000070863510 ....oh......p.5. 00000c73: 0000000071513c10 0000000072661710 ....qQ<.....rf.. 00000c83: 0000000073311e10 000000007445f910 ....s1......tE.. 00000c93: 0000000075110010 00000000762f1590 ....u.......v/.. 00000ca3: 0000000076f0e210 00000000780ef790 ....v.......x... 00000cb3: 0000000078d0c410 0000000079eed990 ....x.......y... 00000cc3: 000000007ab0a610 000000007bcebb90 ....z.......{... 00000cd3: 000000007c99c290 000000007dae9d90 ....|.......}... 00000ce3: 000000007e79a490 000000007f8e7f90 ....~y.......... $ xxd -s 0xcf3 -l 0xf2 -g1 /usr/share/zoneinfo/Europe/London 00000cf3: 04 01 02 01 02 01 02 01 02 01 02 01 02 01 02 01 ................ 00000d03: 02 01 02 01 02 01 02 01 02 01 02 01 02 01 02 01 ................ 00000d13: 02 01 02 01 02 01 02 01 02 01 02 01 02 01 02 01 ................ 00000d23: 02 01 03 01 03 01 03 01 03 01 03 01 02 01 02 01 ................ 00000d33: 03 01 02 01 02 01 02 01 02 01 02 01 02 01 02 01 ................ 00000d43: 02 01 02 01 02 01 02 01 02 01 02 01 02 01 02 01 ................ 00000d53: 02 01 02 01 02 01 02 01 02 01 02 01 05 07 01 02 ................ 00000d63: 01 02 01 02 01 02 01 02 01 02 01 02 01 02 01 02 ................ 00000d73: 06 07 06 07 06 07 06 07 06 07 06 07 06 07 06 07 ................ 00000d83: 06 07 06 07 06 07 06 07 06 07 06 07 06 07 06 07 ................ 00000d93: 06 07 06 07 06 07 06 07 06 07 06 07 06 07 06 07 ................ 00000da3: 06 07 06 07 06 07 06 07 06 07 06 07 06 07 06 07 ................ 00000db3: 06 07 06 07 06 07 06 07 06 07 06 07 06 07 06 07 ................ 00000dc3: 06 07 06 07 06 07 06 07 06 07 06 07 06 07 06 07 ................ 00000dd3: 06 07 06 07 06 07 06 07 06 07 06 07 06 07 06 07 ................ 00000de3: 06 07 .. $ xxd -s 0xde5 -l 0x30 -g6 -c12 /usr/share/zoneinfo/Europe/London 00000de5: ffffffb50000 00000e100104 ............ 00000df1: 000000000008 00001c20010c ......... .. 00000dfd: 000000000008 00000e100004 ............ 00000e09: 00000e100104 000000000008 ............ $ xxd -s 0xe15 -l 0x11 -g1 /usr/share/zoneinfo/Europe/London 00000e15: 4c 4d 54 00 42 53 54 00 47 4d 54 00 42 44 53 54 LMT.BST.GMT.BDST 00000e25: 00 . $ xxd -s 0xe26 -l 0x10 -g1 /usr/share/zoneinfo/Europe/London 00000e26: 00 01 01 01 00 00 01 01 00 00 00 00 00 00 01 01 ................ $ xxd -s 0xe36 -l 0x1a -g1 /usr/share/zoneinfo/Europe/London 00000e36: 0a 47 4d 54 30 42 53 54 2c 4d 33 2e 35 2e 30 2f .GMT0BST,M3.5.0/ 00000e46: 31 2c 4d 31 30 2e 35 2e 30 0a 1,M10.5.0. -- Take care. Thanks, Brian Inglis Calgary, Alberta, Canada La perfection est atteinte Perfection is achieved non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add mais lorsqu'il n'y a plus rien à retirer but when there is no more to cut -- Antoine de Saint-Exupéry