[Rd] Using \u2030 in plot axis label -> stack smashing

[Ei-ji Nakama]

This seems to be the mine which I contrived. m(_|_)m

--- R-alpha.orig/src/main/gram.y        2006-09-04 23:41:33.000000000 +0900
+++ R-alpha/src/main/gram.y     2006-09-19 13:01:41.000000000 +0900
@@ -99,11 +99,12 @@
 # endif
 #endif
 #include <errno.h>
+#define MB_BUF 16

 static size_t ucstomb(char *s, wchar_t wc, mbstate_t *ps)
 {
     char     tocode[128];
-    char     buf[16];
+    char     buf[MB_BUF];
     void    *cd = NULL ;
     wchar_t  wcs[2];
     char    *inbuf = (char *) wcs;
@@ -1709,7 +1710,7 @@
                error(_("\\uxxxx sequences not supported"));
 #else
                wint_t val = 0; int i, ext; size_t res;
-               char buff[5]; Rboolean delim = FALSE;
+               char buff[MB_BUF]; Rboolean delim = FALSE;
                if((c = xxgetc()) == '{') delim = TRUE; else xxungetc(c);
                for(i = 0; i < 4; i++) {
                    c = xxgetc();
@@ -1743,7 +1744,7 @@
 #ifdef SUPPORT_MBCS
                else {
                    wint_t val = 0; int i, ext; size_t res;
-                   char buff[9]; Rboolean delim = FALSE;
+                   char buff[MB_BUF]; Rboolean delim = FALSE;
                    if((c = xxgetc()) == '{') delim = TRUE; else xxungetc(c);
                    for(i = 0; i < 8; i++) {
                        c = xxgetc();


2006/9/19, Gregor Gorjanc <gregor.gorjanc at bfro.uni-lj.si>:
> Gavin Simpson wrote:
> > On Mon, 2006-09-18 at 19:02 +0000, Gregor Gorjanc wrote:
> >> Gavin Simpson <gavin.simpson <at> ucl.ac.uk> writes:
> >>> Dear List
> >>>
> >>> I just noticed the following behaviour in R 2.3.1 Patched (2006-06-13
> >>> r38342) and confirmed similar behaviour in R 2.4.0 alpha (2006-09-18
> >>> r39383) & R 2.5.0 (2006-09-18 r39383) - which may actually be the same
> >>> thing?, that trying to plot the unicode character \u2030 (which should
> >>> be in a ‰ [per mille] sign) in an axis label leads to the following
> >>> error:
> >>>
> >>> *** stack smashing detected ***: /home/gavin/R/R-devel/build/bin/exec/R
> >>> terminated
> >>> Aborted
> >>>
> >>> The simplest, reproducible example I have tried is:
> >>>
> >>> plot(1:10, ylab = "\u2030")
> >>>
> >> I can not reproduce this on my Debian GNU/Linux. I get something like "S
> >> for y label under 2.3.1 2006-06-01 and 2.5.0 2006-09-13 r39292 with the
> >> following locale
> >>
> >> [1] "LC_CTYPE=en_GB.UTF-8;LC_NUMERIC=C;LC_TIME=en_GB.UTF-8;
> >> LC_COLLATE=en_GB.UTF-8;LC_MONETARY=en_GB.UTF-8;LC_MESSAGES=en_GB.UTF-8;
> >> LC_PAPER=C;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=C;
> >> LC_IDENTIFICATION=C"
> >>
> >> It does not change if I set everything into en_GB.UTF-8. Is this valid
> >> unicode code?
> >>
> >> Gregor
> >
> > Cheers for the follow up Gregor,
> >
> > I was following advice given by Prof. Ripley in a posting on R-Help
> > about how to get the per mille character:
> >
> > http://finzi.psych.upenn.edu/R/Rhelp02a/archive/48709.html
> >
> > It should look like a "%" character but with two circles at the bottom.
>
> Perhaps I do not have appropriate font for this character.
>
> Gregor
>
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>


-- 
EI-JI Nakama  <nakama at ki.rim.or.jp>
"\u4e2d\u9593\u6804\u6cbb"  <nakama at ki.rim.or.jp>