Hi, All:
I had some trouble debugging C source dynamically loaded into R , when I
issued N in gdb(or insight) , the debugger, instead of moving downward step by
step, jumped to strange positions (upward, downward, one step, a few steps
away).
To enter the debugger, I issued gdb(insight) Rgui.exe in Cygwin and add
this line : asm("int $3"); to my C code. After
entering R, I did something like: dyn.load("mypath/mycode.dll") , then out <-
.C("myfun", arg1=as.numeric(a),......)
The C files are compiled with: R CMD SHLIB -d myfile.c
I am using Win XP + Cygwin, and I have a binary version and a cygwin
compiled version of R-2.4.1 installed. This same
behavior show up in both installations. One thing is, even though I set the
evn DEBUG as T when built R from sourse in
Cygwin, the Rgui.exe I got doesn't seem to contain debug info. (although
R.exe does) , I am not sure if this means I did something wrong.
Appreciate any help.
tong
______________________________________________
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
