[R] readLines without skipNul=TRUE causes crash

[Anthony Damico]

hello, the last line of the code below causes a segfault for me on 3.4.1.
i think i should submit to https://bugs.r-project.org/  unless others have
advice?  thanks





install.packages( "devtools" )
devtools::install_github("ajdamico/lodown")
devtools::install_github("jimhester/archive")


file_folder <- file.path( tempdir() , "file_folder" )

tf <- tempfile()

# large download!  cachaca saves on your local disk if already downloaded
lodown::cachaca( '
http://download.inep.gov.br/microdados/microdados_enem2009.rar' , tf , mode
= 'wb' )

archive::archive_extract( tf , dir = normalizePath( file_folder ) )

unzipped_files <- list.files( file_folder , recursive = TRUE , full.names =
TRUE  )

infile <- grep( "DADOS(.*)\\.txt$" , unzipped_files , value = TRUE )

# works
R.utils::countLines( infile )

# works with warning
my_file <- readLines( infile , skipNul = TRUE )

# crash
my_file <- readLines( infile )


# run just before crash
sessionInfo()
# R version 3.4.1 (2017-06-30)
# Platform: x86_64-w64-mingw32/x64 (64-bit)
# Running under: Windows 10 x64 (build 15063)

# Matrix products: default

# locale:
# [1] LC_COLLATE=English_United States.1252
# [2] LC_CTYPE=English_United States.1252
# [3] LC_MONETARY=English_United States.1252
# [4] LC_NUMERIC=C
# [5] LC_TIME=English_United States.1252

# attached base packages:
# [1] stats     graphics  grDevices utils     datasets  methods   base

# loaded via a namespace (and not attached):
 # [1] httr_1.2.1         compiler_3.4.1     R6_2.2.1           withr_1.0.2
 # [5] tibble_1.3.3       curl_2.6           Rcpp_0.12.11
memoise_1.1.0
 # [9] R.methodsS3_1.7.1  git2r_0.18.0       digest_0.6.12      lodown_0.1.0
# [13] R.utils_2.5.0      rlang_0.1.1        devtools_1.13.2    R.oo_1.21.0
# [17] archive_0.0.0.9000

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