On Nov 16, 2011, at 2:48 PM, KR wrote: > Simon Urbanek <simon.urbanek <at> r-project.org> writes: >> Not without seeing the actual code. (And details such as which platform >> you're > on). >> Note that setup_Rmainloop() is the last to set the SETJMP context target so > you should make sure the stack is >> still present after it finished (i.e. you can't call it from a sub-function >> - > which Rf_initEmbeddedR >> does) otherwise error without an enclosing context will crash. Or to put it > other way round, create a >> context around your parse/eval code (probably the easiest way to do that is >> to > use R_ToplevelExec). > > I will try to produce the exact code I am using (at the moment it embedded in > other code you would not be interested in), platforms are Windows XP and > Windows7-64. Some points: > > 1. Actually R_tryEvalSilent (and R_tryEval) calls R_ToplevelExec.
Yes, but that's not where you get the crash. > Moreover if > the problem is linked to the SETJMP (which I do not know much about > unfortunately, my background is C++) it's my understanding that it should > manifest itself even for other parse and evaluation errors. Instead the > problem > arise if and only if I pass a wrongly escaped string. I.e. rnorm(10a10) does > not > result in a crash. > Is the R code doing something differently in this specific case? > Your crash is in the parsing step, not in the evaluator (if I understand you correctly) and the parsing step is not wrapped in a context - that's my guess based on what you told us. Cheers, Simon > 2. My code is almost exactly the same as: > http://stackoverflow.com/questions/2463437/r-from-c-simplest-possible- > helloworld/2464479#2464479 > skipping the EXAMPLE 1 part and passing the capture.output(eval(parse(text=" > <code>"))) string to R_tryEval in EXAMPLE 2. > > Cheers, > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > > ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
