Patrick Aboyoun
2012-Feb-16 22:08 UTC
[Rd] Unstable reproduce for potential issue with CHARSXP creation
I stumbled across one of those intermittent bugs where the code sometimes works and sometimes doesn't. Below is an example run showing a failure where a CHARSXP object was not properly created (by the sub function?). I was able to reproduce this error on three different R builds in fresh R sessions, but it sometimes takes a few start up R -> run code -> close R iterations for the error to show itself. > x <- data.frame("X1" = 1) > colnames(x) <- sub("foo", "bar", colnames(x)) > terms(~ ., x) Error in terms.formula(~., x) : 'getCharCE' must be called on a CHARSXP > y <- data.frame("X1" = 1) > colnames(y) <- sub("X", "NEWX", colnames(y)) > terms(~ ., y) Error in terms.formula(~., y) : 'getCharCE' must be called on a CHARSXP > sessionInfo() R Under development (unstable) (2012-02-15 r58359) Platform: x86_64-unknown-linux-gnu (64-bit) locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 [7] LC_PAPER=C LC_NAME=C [9] LC_ADDRESS=C LC_TELEPHONE=C [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets methods base Cheers, Patrick
Patrick Aboyoun
2012-Feb-19 17:21 UTC
[Rd] Unstable reproduce for potential issue with CHARSXP creation
This issue was filed in R bugs and addresses by Prof Brian Ripley. I had neglected to name the data argument, but Brian checked in a fix to R-devel so folks who make the same mistake I did will know they supplied the wrong object type to the specials argument in the terms function. Cheers, Patrick On Feb 16, 2012, at 5:08 PM, Patrick Aboyoun <patrick.aboyoun at oracle.com> wrote:> I stumbled across one of those intermittent bugs where the code sometimes works and sometimes doesn't. Below is an example run showing a failure where a CHARSXP object was not properly created (by the sub function?). I was able to reproduce this error on three different R builds in fresh R sessions, but it sometimes takes a few start up R -> run code -> close R iterations for the error to show itself. > > > > x <- data.frame("X1" = 1) > > colnames(x) <- sub("foo", "bar", colnames(x)) > > terms(~ ., x) > Error in terms.formula(~., x) : 'getCharCE' must be called on a CHARSXP > > y <- data.frame("X1" = 1) > > colnames(y) <- sub("X", "NEWX", colnames(y)) > > terms(~ ., y) > Error in terms.formula(~., y) : 'getCharCE' must be called on a CHARSXP > > sessionInfo() > R Under development (unstable) (2012-02-15 r58359) > Platform: x86_64-unknown-linux-gnu (64-bit) > > locale: > [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C > [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 > [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 > [7] LC_PAPER=C LC_NAME=C > [9] LC_ADDRESS=C LC_TELEPHONE=C > [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C > > attached base packages: > [1] stats graphics grDevices utils datasets methods base > > > > Cheers, > Patrick > > ______________________________________________ > R-devel at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel
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