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> library(testthat)
> library(openxlsx2)
> 
> test_check("openxlsx2")
helper_functions.cpp:156:42: runtime error: -1 is outside the range of representable values of type 'unsigned int'
    #0 0x7fa4ebc285eb in ox_int_to_col(Rcpp::Vector<14, Rcpp::PreserveStorage>) /data/gannet/ripley/R/packages/tests-clang-UBSAN/openxlsx2/src/helper_functions.cpp:156:42
    #1 0x7fa4ebc053be in _openxlsx2_ox_int_to_col /data/gannet/ripley/R/packages/tests-clang-UBSAN/openxlsx2/src/RcppExports.cpp:67:34
    #2 0x55d0e4a26010 in R_doDotCall (/data/gannet/ripley/R/R-clang/bin/exec/R+0x8f010)
    #3 0x55d0e4a74daf in bcEval_loop eval.c
    #4 0x55d0e4a5dbeb in bcEval eval.c
    #5 0x55d0e4a5d374 in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc6374)
    #6 0x55d0e4a7a768 in R_execClosure eval.c
    #7 0x55d0e4a79c6b in applyClosure_core eval.c
    #8 0x55d0e4a5d7c5 in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc67c5)
    #9 0x55d0e4a23f9b in do_External (/data/gannet/ripley/R/R-clang/bin/exec/R+0x8cf9b)
    #10 0x55d0e4a657ea in bcEval_loop eval.c
    #11 0x55d0e4a5dbeb in bcEval eval.c
    #12 0x55d0e4a5d374 in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc6374)
    #13 0x55d0e4a7a768 in R_execClosure eval.c
    #14 0x55d0e4a79c6b in applyClosure_core eval.c
    #15 0x55d0e4a5d7c5 in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc67c5)
    #16 0x55d0e4a7ee2a in do_begin (/data/gannet/ripley/R/R-clang/bin/exec/R+0xe7e2a)
    #17 0x55d0e4a5d59f in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc659f)
    #18 0x55d0e4a811d7 in do_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xea1d7)
    #19 0x55d0e4a657ea in bcEval_loop eval.c
    #20 0x55d0e4a5dbeb in bcEval eval.c
    #21 0x55d0e4a5d374 in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc6374)
    #22 0x55d0e4a7a768 in R_execClosure eval.c
    #23 0x55d0e4a79c6b in applyClosure_core eval.c
    #24 0x55d0e4a5d7c5 in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc67c5)
    #25 0x55d0e4a815b7 in do_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xea5b7)
    #26 0x55d0e4a657ea in bcEval_loop eval.c
    #27 0x55d0e4a5dbeb in bcEval eval.c
    #28 0x55d0e4a5d374 in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc6374)
    #29 0x55d0e4a7a768 in R_execClosure eval.c
    #30 0x55d0e4a79c6b in applyClosure_core eval.c
    #31 0x55d0e4a7d144 in R_forceAndCall (/data/gannet/ripley/R/R-clang/bin/exec/R+0xe6144)
    #32 0x55d0e49ac7db in do_lapply (/data/gannet/ripley/R/R-clang/bin/exec/R+0x157db)
    #33 0x55d0e4ac4bc7 in do_internal (/data/gannet/ripley/R/R-clang/bin/exec/R+0x12dbc7)
    #34 0x55d0e4a65a6b in bcEval_loop eval.c
    #35 0x55d0e4a5dbeb in bcEval eval.c
    #36 0x55d0e4a5d374 in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc6374)
    #37 0x55d0e4a7a768 in R_execClosure eval.c
    #38 0x55d0e4a79c6b in applyClosure_core eval.c
    #39 0x55d0e4a5d7c5 in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc67c5)
    #40 0x55d0e4aaf717 in Rf_ReplIteration (/data/gannet/ripley/R/R-clang/bin/exec/R+0x118717)
    #41 0x55d0e4ab121e in run_Rmainloop (/data/gannet/ripley/R/R-clang/bin/exec/R+0x11a21e)
    #42 0x55d0e4ab128a in Rf_mainloop (/data/gannet/ripley/R/R-clang/bin/exec/R+0x11a28a)
    #43 0x55d0e4998da7 in main (/data/gannet/ripley/R/R-clang/bin/exec/R+0x1da7)
    #44 0x7fa4fca115f4 in __libc_start_call_main (/lib64/libc.so.6+0x35f4) (BuildId: a1dda014206b55b07f58fe8db80121b752dc3d03)
    #45 0x7fa4fca116a7 in __libc_start_main@GLIBC_2.2.5 (/lib64/libc.so.6+0x36a7) (BuildId: a1dda014206b55b07f58fe8db80121b752dc3d03)
    #46 0x55d0e4998cc4 in _start (/data/gannet/ripley/R/R-clang/bin/exec/R+0x1cc4)

SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior helper_functions.cpp:156:42 
Saving _problems/test-wb_styles-1056.R
Saving _problems/test-wb_styles-1062.R
Saving _problems/test-wb_styles-1188.R
Saving _problems/test-wb_styles-1267.R
[ FAIL 4 | WARN 0 | SKIP 80 | PASS 2028 ]

══ Skipped tests (80) ══════════════════════════════════════════════════════════
• !file.exists("C:\\Program Files\\7-zip\\7z.exe") is TRUE (1):
  'test-loading_workbook.R:583:3'
• On CRAN (15): 'test-conditional_formatting.R:1390:3',
  'test-conditional_formatting.R:1420:3', 'test-date_time_conversion.R:66:3',
  'test-pugi_cpp.R:203:3', 'test-read_sources.R:3:3',
  'test-read_sources.R:29:3', 'test-read_sources.R:197:3',
  'test-read_sources.R:312:3', 'test-read_sources.R:517:3',
  'test-read_xlsb.R:3:3', 'test-read_xlsb.R:24:3', 'test-read_xlsb.R:68:3',
  'test-read_xlsb.R:169:3', 'test-read_xlsb.R:182:3', 'test-write.R:944:3'
• Skip on CRAN (64): 'test-class-comment.R:63:3',
  'test-class-workbook-wrappers.R:288:3', 'test-class-workbook.R:377:3',
  'test-class-workbook.R:873:3', 'test-cloneWorksheet.R:8:3',
  'test-cloneWorksheet.R:22:3', 'test-cloneWorksheet.R:113:3',
  'test-cloneWorksheet.R:260:3', 'test-conditional_formatting.R:290:3',
  'test-conditional_formatting.R:450:3', 'test-formulas.R:3:3',
  'test-loading_workbook.R:4:3', 'test-loading_workbook.R:20:3',
  'test-loading_workbook.R:46:3', 'test-loading_workbook.R:64:3',
  'test-loading_workbook.R:156:3', 'test-loading_workbook.R:193:3',
  'test-loading_workbook.R:294:3', 'test-loading_workbook.R:316:3',
  'test-loading_workbook.R:347:3', 'test-loading_workbook.R:407:3',
  'test-loading_workbook.R:418:3', 'test-loading_workbook.R:622:3',
  'test-loading_workbook.R:648:3', 'test-loading_workbook_tables.R:4:3',
  'test-named_regions.R:64:3', 'test-named_regions.R:124:3',
  'test-read_sources.R:46:3', 'test-read_sources.R:57:3',
  'test-read_sources.R:74:3', 'test-read_sources.R:82:3',
  'test-read_sources.R:92:3', 'test-read_sources.R:143:3',
  'test-read_sources.R:214:3', 'test-read_sources.R:232:3',
  'test-read_sources.R:252:3', 'test-read_sources.R:274:3',
  'test-read_sources.R:290:3', 'test-read_sources.R:334:3',
  'test-read_sources.R:365:3', 'test-read_sources.R:375:3',
  'test-read_sources.R:392:3', 'test-read_sources.R:401:3',
  'test-read_sources.R:426:3', 'test-read_sources.R:485:3',
  'test-read_sources.R:496:3', 'test-read_sources.R:505:3',
  'test-read_sources.R:511:3', 'test-read_xlsb.R:132:3',
  'test-read_xlsb.R:154:3', 'test-read_xlsx_correct_sheet.R:3:3',
  'test-remove_worksheets.R:71:3', 'test-save.R:469:3',
  'test-styles_xml.R:3:3', 'test-styles_xml.R:39:3', 'test-styles_xml.R:67:3',
  'test-styles_xml.R:94:3', 'test-styles_xml.R:119:3',
  'test-styles_xml.R:145:3', 'test-utils.R:510:3', 'test-wb_functions.R:5:3',
  'test-wb_functions.R:139:3', 'test-write.R:148:3', 'test-write.R:184:3'

══ Failed tests ════════════════════════════════════════════════════════════════
── Failure ('test-wb_styles.R:1056:3'): date and time formatting works ─────────
Expected `got` to be identical to "01:45:30 PM".
Differences:
`actual`:   "01:45:30 pm"
`expected`: "01:45:30 PM"

── Failure ('test-wb_styles.R:1062:3'): date and time formatting works ─────────
Expected `got` to be identical to "01:45:30 PM".
Differences:
`actual`:   "01:45:30 pm"
`expected`: "01:45:30 PM"

── Failure ('test-wb_styles.R:1188:3'): special formatting works ───────────────
Expected `got` to be identical to "08:15:01 P".
Differences:
`actual`:   "08:15:01 p"
`expected`: "08:15:01 P"

── Failure ('test-wb_styles.R:1267:3'): apply_numfmts works ────────────────────
Expected `got` to equal `exp`.
Differences:
actual vs expected
                 daily_time
- actual[1, ]   08:30:00 am
+ expected[1, ] 08:30:00 AM
- actual[2, ]   09:45:00 am
+ expected[2, ] 09:45:00 AM
  actual[3, ]   NA         
- actual[4, ]   11:15:00 am
+ expected[4, ] 11:15:00 AM
- actual[5, ]   12:00:00 pm
+ expected[5, ] 12:00:00 PM

    actual$daily_time | expected$daily_time    
[1] "08:30:00 am"     - "08:30:00 AM"       [1]
[2] "09:45:00 am"     - "09:45:00 AM"       [2]
[3] NA                | NA                  [3]
[4] "11:15:00 am"     - "11:15:00 AM"       [4]
[5] "12:00:00 pm"     - "12:00:00 PM"       [5]


[ FAIL 4 | WARN 0 | SKIP 80 | PASS 2028 ]
Error:
! Test failures.
Execution halted