Combining POSIXlt and POSIXct yield an infinite loop

[ThierryO]

Combining POXIXlt and POSIXct work using only base R

old_ct <- as.POSIXct("1900-01-01 01:02:03")
old_lt <- as.POSIXlt("1900-01-01 01:02:03")
x <- c(old_ct, old_lt)

Loading lubridate results in an infinite loop

library(lubridate)
x <- c(old_ct, old_lt)
# Error: C stack usage  7973012 is too close to the limit

lubridate/R/POSIXt.r

Line 43 in 46d8d19

.recursive_posixct_unclass <- function(x, tz = "UTC") {

session info

─ Session info ─────────────────────────────────────────────────────────────────────────────────────────────────────────
 setting  value
 version  R version 4.1.2 (2021-11-01)
 os       Ubuntu 20.04.3 LTS
 system   x86_64, linux-gnu
 ui       RStudio
 language nl_BE:nl
 collate  nl_BE.UTF-8
 ctype    nl_BE.UTF-8
 tz       Europe/Brussels
 date     2022-01-12
 rstudio  2022.02.0-daily+366 Prairie Trillium (desktop)
 pandoc   2.14.0.3 @ /usr/bin/pandoc

 ─ Packages ─────────────────────────────────────────────────────────────────────────────────────────────────────────────
 package     * version date (UTC) lib source
 cli           3.1.0   2021-10-27 [1] CRAN (R 4.1.2)
 fortunes      1.5-4   2016-12-29 [1] CRAN (R 4.1.0)
 generics      0.1.1   2021-10-25 [1] CRAN (R 4.1.1)
 lubridate   * 1.8.0   2022-01-12 [1] Github (tidyverse/lubridate@46d8d19)
 sessioninfo   1.2.2   2021-12-06 [1] CRAN (R 4.1.2)

 [1] /home/thierry/R/x86_64-pc-linux-gnu-library/4.0
 [2] /usr/local/lib/R/site-library
 [3] /usr/lib/R/site-library
 [4] /usr/lib/R/library

[vspinu]

Thanks for reporting this!