The following core dumps R 3.2.5, R 3.3.0 RC and R devel on Windows. I have tried to use a minimal setup (for all versions tested), i.e.
C:\> cd C:\ C:\> set PATH=C:\PROGRA~1\R\R-33~1.0RC\bin C:\> set R_DEFAULT_PACKAGES=base C:\> R --quiet --vanilla > close(fifo("foo.tmp", open="wb")) [core dump] C:\> R --quiet --vanilla > con <- fifo('foo.tmp', open='wb') > print(con) description class mode text opened can read "\v" "fifo" "wb" "text" "opened" "no" can write "yes" > close(con) C:\>R --quiet --vanilla -e "close(fifo('foo.tmp', open='wb'))" > close(fifo('foo.tmp', open='wb')) [core dump] C:\>R --quiet --vanilla -e "fh <- fifo('foo.tmp', open='wb'); print(fh); close(fh)" > fh <- fifo('foo.tmp', open='wb'); print(fh); close(fh) description class mode text opened can read "\016" "fifo" "wb" "text" "opened" "no" can write "yes" [core dump] C:\>R --quiet --vanilla -e "fifo('foo.tmp', open='wb'); closeAllConnections()" > fifo('foo.tmp', open='wb'); closeAllConnections() description class mode text opened can read "\016" "fifo" "wb" "text" "opened" "no" can write "yes" [core dump] C:\>Rscript --vanilla -e "close(fifo('foo.tmp', open='wb'))" [core dump] C:\> Rscript --vanilla -e "con <- fifo('foo.tmp', open='wb'); print(con); close(con)" description class mode text opened can read "\f" "fifo" "wb" "text" "opened" "no" can write "yes" [core dump] I doesn't core dump every time, but quite often. When I get it to core dump ones I can often repeat it several times. And when it doesn't core dump, it seems to work for quite a while. Note the random values of the `description` when it core dumps (spurious memory mapping?). These are reproducible between core dumps and I even seen then across different cmd.exe sessions. When it does *not* core dump, I typically see "foo.tmp" (as expected), but I've also seen "con" (sic!). I've got it to core dump with the following versions of R: C:\>Rscript -e "utils::sessionInfo()" R version 3.2.5 (2016-04-14) Platform: x86_64-w64-mingw32/x64 (64-bit) Running under: Windows 7 x64 (build 7601) Service Pack 1 C:\>R --version R version 3.3.0 RC (2016-04-28 r70564) -- "Supposedly Educational" Copyright (C) 2016 The R Foundation for Statistical Computing Platform: x86_64-w64-mingw32/x64 (64-bit) all with session info: C:\>Rscript --vanilla -e "utils::sessionInfo()" R version { version } Platform: x86_64-w64-mingw32/x64 (64-bit) Running under: Windows 7 x64 (build 7601) Service Pack 1 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] base loaded via a namespace (and not attached): [1] utils_3.3.0 Can some else reproduce this? I'd be happy to do a formal bug report. Thanks Henrik ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel