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Re: jupyter notebook with R kernel
On Fri, 1 Oct 2021 at 10:58, Roland Illig <roland.illig%gmx.de@localhost> wrote:
> 01.10.2021 11:44:29 Chavdar Ivanov <ci4ic4%gmail.com@localhost>:
> > *** caught segfault ***
> > address 0x2a8, cause 'memory not mapped'
> > Traceback:
> > 1: toupper(nms)
> > 2: is.factor(x)
> > 3: gsub(".", "_", toupper(nms), fixed = TRUE)
> This looks like one of my favorite bugs: calling toupper with a plain char as argument. Does the string contain any non-ASCII characters?
> In C, this is a problem. I would expect that the R runtime knows how to call C's toupper properly. In case they don't, here's the test case from the lint check I wrote for this common bug, providing further insights:
> Maybe that helps you finding the root cause.
This is the problem, indeed. Nothing to do with jupyter, it is a
problem with R itself. You get the same if you invoke R and ener
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During startup - Warning message:
Setting LC_COLLATE failed, using "C"
*** caught segfault ***
address 0x610, cause 'memory not mapped'
2: paste("R", tolower(x$title))
3: file.show(outFile, delete.file = TRUE, title = paste("R", tolower(x$title)))
5: (function (x, ...) UseMethod("print"))(x)
If you start it with
$ LC_ALL=C R
then all is well; one has to start the jupyter notebook the same way,
then R kernel works.
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