Re: [Rd] Bug in list subset assignment due to NAMED optimization
On Tue, 8 Jan 2013, Justin Talbot wrote: In R version 2.15.2 (2012-10-26) i386-apple-darwin9.8.0/i386 (32-bit) I get the following: a <- list(1) (a[[1]] <- a) [[1]] [[1]][[1]] [1] 1 but a <- list(1) b <- a (a[[1]] <- a) [[1]] [1] 1 And similarly: a <- list(x=1) (a$x <- a) $x $x$x [1] 1 but a <- list(x=1) b <- a (a$x <- a) $x [1] 1 In both cases the result of the first sequence is wrong. It's returning the updated `a` rather than the RHS of the assignment. The second sequence in both cases is correct; the assignment to `b` increments the NAMED value causing the necessary copy to be made so the RHS is returned from the assignment. Would it be sufficient to add a check to do_subassign2_dflt and do_subassign3_dflt that creates a duplicate of the LHS if the LHS & RHS are the same object? Thanks -- that's probably the best fix but I want to think it thorugh a bit more before committing. Best, luke Justin [[alternative HTML version deleted]] __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel -- Luke Tierney Chair, Statistics and Actuarial Science Ralph E. Wareham Professor of Mathematical Sciences University of Iowa Phone: 319-335-3386 Department of Statistics andFax: 319-335-3017 Actuarial Science 241 Schaeffer Hall email: luke-tier...@uiowa.edu Iowa City, IA 52242 WWW: http://www.stat.uiowa.edu __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
[Rd] Cannot override default -O3 flag on Winodws, dll does not have symbols
In trying to compile a package with c code using Rtools, -O3 is added by default. This comes from Makeconf? Compiler flags (CFLAGS="-O0 -g" ) set in src/Makevars.win or src/Makevars appear before this. nm pkg.dll reveals no symbols! How can I compile a Windows package with "-O2 -g"? Thanks, RT -- View this message in context: http://r.789695.n4.nabble.com/Cannot-override-default-O3-flag-on-Winodws-dll-does-not-have-symbols-tp4655106.html Sent from the R devel mailing list archive at Nabble.com. __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] Cannot override default -O3 flag on Winodws, dll does not have symbols
On 9 January 2013 at 18:58, rtaylor wrote: | In trying to compile a package with c code using Rtools, -O3 is added by | default. This comes from Makeconf? Compiler flags (CFLAGS="-O0 -g" ) set in | src/Makevars.win or src/Makevars appear before this. | | nm pkg.dll reveals no symbols! | | How can I compile a Windows package with "-O2 -g"? a) [long way] By locally building R with such a configure flag b) [shortcut] By editing the Makeconf file of the R installation used for compiling, eg in $R_HOME/etc/Makeconf (or maybe Makeconf.win) Dirk -- Dirk Eddelbuettel | e...@debian.org | http://dirk.eddelbuettel.com __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] Cannot override default -O3 flag on Winodws, dll does not have symbols
On 10/01/2013 02:58, rtaylor wrote: In trying to compile a package with c code using Rtools, -O3 is added by default. This comes from Makeconf? Compiler flags (CFLAGS="-O0 -g" ) set in src/Makevars.win or src/Makevars appear before this. nm pkg.dll reveals no symbols! That is not a function of using -O3, if there is useful code (as there needs to be in an R package since you need to link to entry points). How can I compile a Windows package with "-O2 -g"? By following the manuals. 'Writing R Extensions' points you to your local version of http://cran.r-project.org/doc/manuals/r-release/R-admin.html#Customizing-package-compilation But it you want debug symbols, read about how to build a debug version of R in that manual (and use -gdwarf-2). Thanks, RT -- View this message in context: http://r.789695.n4.nabble.com/Cannot-override-default-O3-flag-on-Winodws-dll-does-not-have-symbols-tp4655106.html Sent from the R devel mailing list archive at Nabble.com. __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel -- Brian D. Ripley, rip...@stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UKFax: +44 1865 272595 __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
