On Wed, 18 Apr 2007, Peter Dalgaard wrote: > [EMAIL PROTECTED] wrote: >> I get strange results when I try to format() an NA character string. >> >> >>> x <- 'sometext' >>> x[1] <- NA >>> format(NA, width=32) # displays sensibly, right-justified >>> format(x,width=32) # displays sensibly, left-justified >>> format(x,width=33) # displays "" >>> format(x,width=36) # R exits abnormally with code 5 >>> >> >> > This happens on Linux too, given slightly larger widths:
It happened for me on Linux in R 2.4.1 at width=32, but those examples are fine on both Linux and Windows in pre-2.5.0. It was (of course) a buffer overflow, fixed now for 2.5.0. Valgrind got to the correct spot (in paste.c). > > R version 2.5.0 RC (2007-04-17 r41210) > .... >> x <- as.character(NA) >> format(x,width=64) > > Program received signal SIGSEGV, Segmentation fault. > Rstrlen (s=0x20000009, quote=0) at ../../../R/src/main/printutils.c:374 > 374 return Rstrwid(CHAR(s), LENGTH(s), quote); > > > >>> version >>> >> platform i386-pc-mingw32 >> arch i386 >> os mingw32 >> system i386, mingw32 >> status >> major 2 >> minor 4.1 >> year 2006 >> month 12 >> day 18 >> svn rev 40228 >> language R >> version.string R version 2.4.1 (2006-12-18) >> >> I'm running Windows XP. >> >> Damon. >> >> ______________________________________________ >> R-devel@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-devel >> > > > -- Brian D. Ripley, [EMAIL PROTECTED] 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, UK Fax: +44 1865 272595 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
