sending signals to embedded R

I will have to start learning about gdb sometime soon, but in this case, the
problem seems to be due to the interaction of R_tryEval() and
graphics, and has nothing to do with interruptions.  Here's a variant
of the trEval test case that triggers a legitimate error caused by

grid.text('foo', gp = gpar(font=1, fontface=1))

Running this, I get:


dsarkar at kanika:~$ R-devel CMD ./tryEvalGraphics

R version 2.6.0 Under development (unstable) (2007-05-04 r41439)

[...]

[Previously saved workspace restored]

** I **: Executing command: library(lattice)
[1] "stats"     "graphics"  "grDevices" "utils"     "datasets"  "lattice"
[7] "rcompgen"  "methods"   "base"
** I **: Succeeded
** I **: Executing command: library(grid)
 [1] "grid"      "stats"     "graphics"  "grDevices" "utils"     "datasets"
 [7] "lattice"   "rcompgen"  "methods"   "base"
** I **: Succeeded
** I **: Executing command: grid.text('foo', gp = gpar(font=1, fontface=1))
Error in validGP(list(...)) : Must specify only one of 'font' and 'fontface'
Error executing: grid.text('foo', gp = gpar(font=1, fontface=1))
** I **: Succeeded
** I **: Executing command: xyplot(1 ~ 1, panel = function()
grid.text('foo', gp = gpar(font=1, fontface=1)))
Error in validGP(list(...)) : Must specify only one of 'font' and 'fontface'

 *** caught segfault ***
address 0x22000440, cause 'memory not mapped'

Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace
Selection: 3
dsarkar at kanika:~$