[Rd] R API for C/C++ initialisation issue appears with update to R.3.5
@ndeol@ev@in @ending from gm@il@com
Fri Jul 13 15:08:51 CEST 2018
Thanks you very much !
I cleaned up all the Qt dependencies to simplify reproducibility, but when
I moved the call to Rf_endEmbedded to the destructor of class RManager
instead of right after the callbacks settings, the issue disappeared.
It still seems a bit weird that this placement of Rf_endEmbedded was ok for
R.3.4, but not for R.3.5. Maybe there used to be some bug that allowed it
to work while it shouldn't.
2018-07-12 23:50 GMT+01:00 <luke-tierney using uiowa.edu>:
> You might have more luck getting help with a completely self-contained
> example (no QT in particular) and a complete description of how you
> built and ran your example.
> That said, the placement of the call to Rf_endEmbedded looks a little
> On Thu, 12 Jul 2018, Andéol Evain wrote:
> Hello everyone,
>> I have a C++ program that calls R using R_tryEval, very similarly to what
>> package RInside does.
>> It used to work with R.3.4.3 and R.3.4.4. However, since I updated it to
>> R.3.5.1, R sends an error message: "*Error in < My command > : the base
>> graphics system is not registered*" for any command related to the
>> graphics package.
>> I made a ticket on stackoverflow about it: https://stackoverflow.com/
>> But nobody could explain why so far. And after reducing my code further, I
>> am now enclined to think this is actually a bug.
>> The code provided in stackOverflow is already reduced, but not minimal
>> Since then, I reduced it further to really ensure that it was not an
>> interference from anything around it. So I removed the GUI and the
>> Here is a really minimal example attached.
>> In its current form, the program just sends the command : par("mar") to
>> R, and then the command dev.off() .
>> With R.3.4.4, this program print as output what is expected. No error
>> occured during evaluation of the command :
>> *No error occured during eval of "par(\"mar\")"EXAMPLE #1 Output: EXAMPLE
>> #1 Output: Result is: "5.1"Result is: "5.1"Result is: "5.1"Result is:
>> "5.1"No error occured during eval of "dev.off()"Result is: "1"*
>> But the exact same program with R.3.5.1 gives:
>> *An error occured during eval of "par(\"mar\")"No error occured during
>> of "dev.off()"Result is: "1"*
>> The error that occured is not displayed here, since I removed the
>> to fetch it, but it was:
>> *Error in par("mar") : the base graphics system is not registered*
>> I compiled Microsoft Visual C++ Compiler 15.0 (amd64), and uses 64bits
>> version of R. But previously I also observed the same behovior with
>> I also tried re-installing R from scratch, without effect.
>> I am using Windows 10, 64bits
>> Registry variables PATH and R_HOME are correctly set and points to the
>> appropriate version of R, installed in the default directory.
>> I'd be glad to hear any ideas about potential fixes or workaround.
>> Andéol Evain
> 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-tierney using uiowa.edu
> Iowa City, IA 52242 WWW: http://www.stat.uiowa.edu
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