[Rd] Crash in de()

[Peter Dalgaard]

Peter Dalgaard <p.dalgaard at biostat.ku.dk> writes:

> Juan Santiago Ramseyer <juan_sr at uol.com.br> writes:
> 
> > SYSTEM:
> > ------
> > 	CPU: AMD64
> > 	MOTHERBOARD: ASUS 
> > 	OS: FEDORA CORE 5 i64_86
> > 
> > R SESSION:
> > ----------
> > > teste<-list(a=c(1,2,3,4),b=c(2,4,6,8))
> > > teste
> > $a
> > [1] 1 2 3 4
> > 
> > $b
> > [1] 2 4 6 8
> > 
> > > de(teste)
> > *** buffer overflow detected ***: /usr/lib64/R/bin/exec/R terminated
> 
> Yes, I see this too with the Fedora Extras 5 RPM on i386. 
> 
> Things like data.entry(airquality) are equally broken. 
> 
> However: It's not happening for me with a current source-compiled
> r-devel, nor with 2.3.0beta, so it seems like it might be a packaging
> error.

Correction: I *can* reproduce if I use the Fedora CFLAGS settings, i.e.

-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
 -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i386
-mtune=generic -fasynchronous-unwind-tables

Presumably it is the -fstack-protector doing its job and we have a
real bug that just doesn't trigger without it. Will have a look.

(BTW, x<-0; de(x) is sufficient to cause the crash).

-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
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~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)                  FAX: (+45) 35327907