Full_Name: Ben K.
Version: 1.7.1
OS: Win 2000
Submission from: (NULL) (208.243.20.222)
This C code doesn't crash:
void init(SEXP rho, int *o){
SEXP vars = findVar(install("vars"), rho);
}
It's called using:
vars <-as.data.frame(NULL)
vars$delta <-7
dyn.load("c_fns.dll")
print(.C("init",.GlobalEnv,o=as.integer(3))$o)
However, this does crash (``Rgui has generated errors and will be closed by
Windows''):
void init(SEXP rho, int *o){
SEXP vars = findVar(install("vars"), R_GlobalEnv);
}
This also crashes:
void init(SEXP rho, int *o){
SEXP vars = findVar(install("vars"), rho);
*o = INTEGER(getListElement(vars,"delta"))[0];
}
(where GetListElement is that function from the R help)
Further, if I source dyn.load("c_fns.dll") twice, R starts churning away, taking
up 100% of the CPU to do nothing, until I pull up the task manager and kill R.
This happens whether I've called dyn.unload or not.
All of this runs just fine under Linux. But I have no experience with
programming in Windows, so this is all too subtle for me to work out.
Thaks for your help,
B
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