That's about it. The plan is to modify the interpreter to do the same so the inconsistency will go away. Code that is affected by this is making assumptions that it should not.
Best, luke On Fri, 11 Nov 2016, Winston Chang wrote:
It looks like the byte compiler is optimizing local() to an immediately-invoked function, instead of using eval() and substitute(). I don't know if that's exactly how it's implemented internally, but that's what it looks like here: compiler::enableJIT(0) fun <- function(x) { local(sys.calls()) } fun(1) ## [[1]] ## fun(1) ## ## [[2]] ## local(sys.calls()) ## ## [[3]] ## eval.parent(substitute(eval(quote(expr), envir))) ## ## [[4]] ## eval(expr, p) ## ## [[5]] ## eval(expr, envir, enclos) ## call ## [[6]] ## eval(quote(sys.calls()), new.env()) ## ## [[7]] ## eval(expr, envir, enclos) compiler::cmpfun(fun)(1) ## [[1]] ## (compiler::cmpfun(fun))(1) ## ## [[2]] ## (function() sys.calls())() -Winston On Fri, Nov 11, 2016 at 1:13 PM, brodie gaslam via R-devel < r-devel@r-project.org> wrote:I noticed some problems that cropped in the latest versions of R-devel (2016-11-08 r71639 in my case) for one of my packages. I _think_ I have narrowed it down to the changes to what gets byte-compiled by default. The following example run illustrates the problem I'm having: compiler::enableJIT(0) fun <- function(x) local(as.list(parent.frame(2))) fun(1) ## $x ## [1] 1 ## compiler::cmpfun(fun)(1) ## <contents of .GlobalEnv> Is this considered problematic at all? If so, might it make sense to broaden the list of functions that disable JIT compilation beyond `browser`? I'm pretty sure I can work around this issue in my specific use case, but figured it is worth mentioning here since it is a change in behavior. Regards, B. ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel[[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
-- Luke Tierney Ralph E. Wareham Professor of Mathematical Sciences University of Iowa Phone: 319-335-3386 Department of Statistics and Fax: 319-335-3017 Actuarial Science 241 Schaeffer Hall email: luke-tier...@uiowa.edu Iowa City, IA 52242 WWW: http://www.stat.uiowa.edu ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
