[tz] iana build failures on Windows

Mon May 3 18:17:28 UTC 2021

Hmm, it looks like my previous diagnosis was incorrect.

Perhaps the problem is with the abbreviations, not the offsets. Please 
try the attached zdump-test.diff patch instead (this is against the 
current development commit a16541786b0d8c9746de8ed558c861550fdc3bc3 
dated Apr 26 09:49:29 2021 -0700).

What is your output of 'zdump -v Africa/Abidjan' with this patch? My 
output zdump-Abidjan.txt is attached for comparison.
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Africa/Abidjan  -9223372036854775808 = NULL
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-9223372036854775808 t=-4611686057400224704 hit=-77945673600
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-4611686057400224704 t=-2305843067672949152 hit=-77945673600
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-2305843067672949152 t=-1152921572809311376 hit=-77945673600
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-1152921572809311376 t=-576460825377492488 hit=-77945673600
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-576460825377492488 t=-288230451661583044 hit=-77945673600
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-288230451661583044 t=-144115264803628322 hit=-77945673600
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-144115264803628322 t=-72057671374650961 hit=-77945673600
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-72057671374650961 t=-36028874660162281 hit=-77945673600
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-72057671374650961 t=-54043273017406621 hit=-36028874660162281
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-72057671374650961 t=-63050472196028791 hit=-54043273017406621
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-72057671374650961 t=-67554071785339876 hit=-63050472196028791
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-72057671374650961 t=-69805871579995419 hit=-67554071785339876
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-69805871579995419 t=-68679971682667648 hit=-67554071785339876
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-68679971682667648 t=-68117021734003762 hit=-67554071785339876
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-68117021734003762 t=-67835546759671819 hit=-67554071785339876
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67835546759671819 t=-67694809272505848 hit=-67554071785339876
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67835546759671819 t=-67765178016088834 hit=-67694809272505848
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67835546759671819 t=-67800362387880327 hit=-67765178016088834
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67800362387880327 t=-67782770201984581 hit=-67765178016088834
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67782770201984581 t=-67773974109036708 hit=-67765178016088834
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67773974109036708 t=-67769576062562771 hit=-67765178016088834
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67769576062562771 t=-67767377039325803 hit=-67765178016088834
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67769576062562771 t=-67768476550944287 hit=-67767377039325803
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768476550944287 t=-67767926795135045 hit=-67767377039325803
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768476550944287 t=-67768201673039666 hit=-67767926795135045
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768201673039666 t=-67768064234087356 hit=-67767926795135045
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768064234087356 t=-67767995514611201 hit=-67767926795135045
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768064234087356 t=-67768029874349279 hit=-67767995514611201
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768064234087356 t=-67768047054218318 hit=-67768029874349279
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768047054218318 t=-67768038464283799 hit=-67768029874349279
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768047054218318 t=-67768042759251059 hit=-67768038464283799
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768042759251059 t=-67768040611767429 hit=-67768038464283799
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040611767429 t=-67768039538025614 hit=-67768038464283799
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040611767429 t=-67768040074896522 hit=-67768039538025614
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040611767429 t=-67768040343331976 hit=-67768040074896522
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040611767429 t=-67768040477549703 hit=-67768040343331976
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040611767429 t=-67768040544658566 hit=-67768040477549703
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040611767429 t=-67768040578212998 hit=-67768040544658566
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040611767429 t=-67768040594990214 hit=-67768040578212998
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040611767429 t=-67768040603378822 hit=-67768040594990214
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040611767429 t=-67768040607573126 hit=-67768040603378822
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040611767429 t=-67768040609670278 hit=-67768040607573126
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768040611767429 t=-67768040610718854 hit=-67768040609670278
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768040610718854 t=-67768040610194566 hit=-67768040609670278
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768040610194566 t=-67768040609932422 hit=-67768040609670278
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768040609932422 t=-67768040609801350 hit=-67768040609670278
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040609801350 t=-67768040609735814 hit=-67768040609670278
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768040609801350 t=-67768040609768582 hit=-67768040609735814
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768040609768582 t=-67768040609752198 hit=-67768040609735814
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768040609752198 t=-67768040609744006 hit=-67768040609735814
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768040609744006 t=-67768040609739910 hit=-67768040609735814
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040609739910 t=-67768040609737862 hit=-67768040609735814
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040609739910 t=-67768040609738886 hit=-67768040609737862
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040609739910 t=-67768040609739398 hit=-67768040609738886
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040609739910 t=-67768040609739654 hit=-67768040609739398
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040609739910 t=-67768040609739782 hit=-67768040609739654
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768040609739910 t=-67768040609739846 hit=-67768040609739782
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040609739846 t=-67768040609739814 hit=-67768040609739782
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040609739846 t=-67768040609739830 hit=-67768040609739814
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768040609739846 t=-67768040609739838 hit=-67768040609739830
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768040609739838 t=-67768040609739834 hit=-67768040609739830
TRACING: lotm_ok=0 tm_ok=1 only_ok=1 lot=-67768040609739834 t=-67768040609739832 hit=-67768040609739830
TRACING: lotm_ok=0 tm_ok=0 only_ok=1 lot=-67768040609739834 t=-67768040609739833 hit=-67768040609739832
Africa/Abidjan  -67768040609740801 = NULL
Africa/Abidjan  Thu Jan  1 00:00:00 -2147481748 UT = NULL
Africa/Abidjan  Thu Jan  1 00:16:07 -2147481748 UT = NULL
Africa/Abidjan  Thu Jan  1 00:16:08 -2147481748 UT = Thu Jan  1 00:00:00 -2147481748 LMT isdst=0 gmtoff=-968
TRACING: lotm_ok=1 tm_ok=1 only_ok=0 lot=-1830384001 t=-1830362401 tm={1912-001T05:59:59 dst=0 abbr='GMT'} lotm={1911-365T23:43:51 dst=0 abbr='LMT'} delta=22568 t-lot=21600 hit=-1830340801
TRACING: lotm_ok=1 tm_ok=1 only_ok=0 lot=-1830384001 t=-1830373201 tm={1912-001T02:59:59 dst=0 abbr='GMT'} lotm={1911-365T23:43:51 dst=0 abbr='LMT'} delta=11768 t-lot=10800 hit=-1830362401
TRACING: lotm_ok=1 tm_ok=1 only_ok=0 lot=-1830384001 t=-1830378601 tm={1912-001T01:29:59 dst=0 abbr='GMT'} lotm={1911-365T23:43:51 dst=0 abbr='LMT'} delta=6368 t-lot=5400 hit=-1830373201
TRACING: lotm_ok=1 tm_ok=1 only_ok=0 lot=-1830384001 t=-1830381301 tm={1912-001T00:44:59 dst=0 abbr='GMT'} lotm={1911-365T23:43:51 dst=0 abbr='LMT'} delta=3668 t-lot=2700 hit=-1830378601
TRACING: lotm_ok=1 tm_ok=1 only_ok=0 lot=-1830384001 t=-1830382651 tm={1912-001T00:22:29 dst=0 abbr='GMT'} lotm={1911-365T23:43:51 dst=0 abbr='LMT'} delta=2318 t-lot=1350 hit=-1830381301
TRACING: lotm_ok=1 tm_ok=1 only_ok=0 lot=-1830384001 t=-1830383326 tm={1911-365T23:55:06 dst=0 abbr='LMT'} lotm={1911-365T23:43:51 dst=0 abbr='LMT'} delta=675 t-lot=675 hit=-1830382651
TRACING: lotm_ok=1 tm_ok=1 only_ok=0 lot=-1830383326 t=-1830382989 tm={1912-001T00:16:51 dst=0 abbr='GMT'} lotm={1911-365T23:55:06 dst=0 abbr='LMT'} delta=1305 t-lot=337 hit=-1830382651
TRACING: lotm_ok=1 tm_ok=1 only_ok=0 lot=-1830383326 t=-1830383158 tm={1911-365T23:57:54 dst=0 abbr='LMT'} lotm={1911-365T23:55:06 dst=0 abbr='LMT'} delta=168 t-lot=168 hit=-1830382989
TRACING: lotm_ok=1 tm_ok=1 only_ok=0 lot=-1830383158 t=-1830383074 tm={1911-365T23:59:18 dst=0 abbr='LMT'} lotm={1911-365T23:57:54 dst=0 abbr='LMT'} delta=84 t-lot=84 hit=-1830382989
TRACING: lotm_ok=1 tm_ok=1 only_ok=0 lot=-1830383074 t=-1830383032 tm={1912-001T00:16:08 dst=0 abbr='GMT'} lotm={1911-365T23:59:18 dst=0 abbr='LMT'} delta=1010 t-lot=42 hit=-1830382989
TRACING: lotm_ok=1 tm_ok=1 only_ok=0 lot=-1830383074 t=-1830383053 tm={1911-365T23:59:39 dst=0 abbr='LMT'} lotm={1911-365T23:59:18 dst=0 abbr='LMT'} delta=21 t-lot=21 hit=-1830383032
TRACING: lotm_ok=1 tm_ok=1 only_ok=0 lot=-1830383053 t=-1830383043 tm={1911-365T23:59:49 dst=0 abbr='LMT'} lotm={1911-365T23:59:39 dst=0 abbr='LMT'} delta=10 t-lot=10 hit=-1830383032
TRACING: lotm_ok=1 tm_ok=1 only_ok=0 lot=-1830383043 t=-1830383038 tm={1911-365T23:59:54 dst=0 abbr='LMT'} lotm={1911-365T23:59:49 dst=0 abbr='LMT'} delta=5 t-lot=5 hit=-1830383032
TRACING: lotm_ok=1 tm_ok=1 only_ok=0 lot=-1830383038 t=-1830383035 tm={1911-365T23:59:57 dst=0 abbr='LMT'} lotm={1911-365T23:59:54 dst=0 abbr='LMT'} delta=3 t-lot=3 hit=-1830383032
TRACING: lotm_ok=1 tm_ok=1 only_ok=0 lot=-1830383035 t=-1830383034 tm={1911-365T23:59:58 dst=0 abbr='LMT'} lotm={1911-365T23:59:57 dst=0 abbr='LMT'} delta=1 t-lot=1 hit=-1830383032
TRACING: lotm_ok=1 tm_ok=1 only_ok=0 lot=-1830383034 t=-1830383033 tm={1911-365T23:59:59 dst=0 abbr='LMT'} lotm={1911-365T23:59:58 dst=0 abbr='LMT'} delta=1 t-lot=1 hit=-1830383032
Africa/Abidjan  Mon Jan  1 00:16:07 1912 UT = Sun Dec 31 23:59:59 1911 LMT isdst=0 gmtoff=-968
Africa/Abidjan  Mon Jan  1 00:16:08 1912 UT = Mon Jan  1 00:16:08 1912 GMT isdst=0 gmtoff=0
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=16725225600 t=4611686026790000703 hit=9223372036854775807
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=16725225600 t=2305843021757613151 hit=4611686026790000703
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=16725225600 t=1152921519241419375 hit=2305843021757613151
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=16725225600 t=576460767983322487 hit=1152921519241419375
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=16725225600 t=288230392354274043 hit=576460767983322487
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=16725225600 t=144115204539749821 hit=288230392354274043
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=16725225600 t=72057610632487710 hit=144115204539749821
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=16725225600 t=36028813678856655 hit=72057610632487710
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=36028813678856655 t=54043212155672182 hit=72057610632487710
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=54043212155672182 t=63050411394079946 hit=72057610632487710
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=63050411394079946 t=67554011013283828 hit=72057610632487710
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67554011013283828 t=69805810822885769 hit=72057610632487710
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67554011013283828 t=68679910918084798 hit=69805810822885769
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67554011013283828 t=68116960965684313 hit=68679910918084798
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67554011013283828 t=67835485989484070 hit=68116960965684313
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67554011013283828 t=67694748501383949 hit=67835485989484070
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67694748501383949 t=67765117245434009 hit=67835485989484070
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67765117245434009 t=67800301617459039 hit=67835485989484070
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67765117245434009 t=67782709431446524 hit=67800301617459039
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67765117245434009 t=67773913338440266 hit=67782709431446524
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67765117245434009 t=67769515291937137 hit=67773913338440266
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67765117245434009 t=67767316268685573 hit=67769515291937137
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67767316268685573 t=67768415780311355 hit=67769515291937137
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67767316268685573 t=67767866024498464 hit=67768415780311355
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67767866024498464 t=67768140902404909 hit=67768415780311355
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67767866024498464 t=67768003463451686 hit=67768140902404909
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768003463451686 t=67768072182928297 hit=67768140902404909
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768003463451686 t=67768037823189991 hit=67768072182928297
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768003463451686 t=67768020643320838 hit=67768037823189991
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768020643320838 t=67768029233255414 hit=67768037823189991
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768029233255414 t=67768033528222702 hit=67768037823189991
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768033528222702 t=67768035675706346 hit=67768037823189991
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768035675706346 t=67768036749448168 hit=67768037823189991
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768035675706346 t=67768036212577257 hit=67768036749448168
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768035675706346 t=67768035944141801 hit=67768036212577257
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768035944141801 t=67768036078359529 hit=67768036212577257
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768036078359529 t=67768036145468393 hit=67768036212577257
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768036145468393 t=67768036179022825 hit=67768036212577257
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768036179022825 t=67768036195800041 hit=67768036212577257
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768036179022825 t=67768036187411433 hit=67768036195800041
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768036187411433 t=67768036191605737 hit=67768036195800041
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768036191605737 t=67768036193702889 hit=67768036195800041
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768036191605737 t=67768036192654313 hit=67768036193702889
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768036191605737 t=67768036192130025 hit=67768036192654313
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768036191605737 t=67768036191867881 hit=67768036192130025
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768036191605737 t=67768036191736809 hit=67768036191867881
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768036191605737 t=67768036191671273 hit=67768036191736809
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768036191671273 t=67768036191704041 hit=67768036191736809
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768036191671273 t=67768036191687657 hit=67768036191704041
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768036191671273 t=67768036191679465 hit=67768036191687657
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768036191671273 t=67768036191675369 hit=67768036191679465
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768036191675369 t=67768036191677417 hit=67768036191679465
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768036191675369 t=67768036191676393 hit=67768036191677417
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768036191676393 t=67768036191676905 hit=67768036191677417
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768036191676393 t=67768036191676649 hit=67768036191676905
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768036191676649 t=67768036191676777 hit=67768036191676905
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768036191676777 t=67768036191676841 hit=67768036191676905
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768036191676777 t=67768036191676809 hit=67768036191676841
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768036191676777 t=67768036191676793 hit=67768036191676809
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768036191676793 t=67768036191676801 hit=67768036191676809
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768036191676793 t=67768036191676797 hit=67768036191676801
TRACING: lotm_ok=1 tm_ok=1 only_ok=1 lot=67768036191676797 t=67768036191676799 hit=67768036191676801
TRACING: lotm_ok=1 tm_ok=0 only_ok=1 lot=67768036191676799 t=67768036191676800 hit=67768036191676801
Africa/Abidjan  Wed Dec 31 23:59:59 2147485547 UT = Wed Dec 31 23:59:59 2147485547 GMT isdst=0 gmtoff=0
Africa/Abidjan  67768036191676800 = NULL
Africa/Abidjan  9223372036854775807 = NULL