[Rd] text() with invalid argument type crashes RGui.exe

[Roger Bivand]

On Wed, 24 Nov 2004, P Ehlers wrote:

> Dear Rexperts:
> 
> (R 2.0.1 on Windows XP Pro)
> 
> Is the following problem unique to my setup?
> If it's a known problem, I didn't see it at
> http://bugs.r-project.org/ nor find discussion in the archives.
> 
> plot(1:10)
> loc <- c(5, 6)
> text(loc, labels = "a")
> 
> Produces expected results according to ?xy.coords.
> 
> plot(1:10)
> loc <- list(x = 5, y = 6)
> text(loc, labels = "a")
> 
> No problem.
> 
> But:
> 
> plot(1:10)
> loc <- list(5, 6)
> text(loc, labels = "a")
> 
> crashes RGui.
> ("R for Windows GUI front-end has encountered a problem and ...")
> 
> R-FAQ:9.1 says:
> 
> If you call .C(), .Fortran(), .External() or .Call() (or
> .Internal()) yourself (or in a function you wrote), you can
> always crash R by using wrong argument types (modes). This
> is not a bug.
> 
> I realize that I'm using the wrong argument type;
> nevertheless, if the behaviour is general, it might be better
> to generate an error.
> 
> For anyone with more know-how than I have, here are the details
> of the crash:
> AppName: rgui.exe     AppVer: 2.1.41115.0     ModName: r.dll
> ModVer: 2.1.41115.0     Offset: 000ef1b3
> 

Version 2.0.1  (2004-11-15), ISBN 3-900051-07-0
RHEL 3 i386

> plot(1:10)
> loc <- list(5, 6)
> text(loc, labels = "a")

Program received signal SIGFPE, Arithmetic exception.
0x080edd3b in do_text (call=0x9080c48, op=0x867d72c, args=0x8660570, 
    env=0x8a1bf90) at plot.c:2153
2153            xx = x[i % n];

> 
> Peter Ehlers
> U of Calgary
> ehlers at math.ucalgary.ca
> 
> ______________________________________________
> R-devel at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
> 

-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Breiviksveien 40, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 93 93
e-mail: Roger.Bivand at nhh.no