I am developing R functions that interface with C++ code from the OpenCV
library. During development and unit testing, I embed an R instance to prepare
the environment in which the function encapsulating OpenCV code is called.
Running the unit testing suite results in starting (and later terminating) an
embedded R instance for each test. This produces a series of error messages
when Rf_initEmbeddedR is called for the second time. This error is reproduced
by running
#include <Rembedded.h>
int main(int argc, char **argv) {
Rf_initEmbeddedR(argc, argv);
Rf_endEmbeddedR(0);
Rf_initEmbeddedR(argc, argv);
Rf_endEmbeddedR(0);
return 0;
}
which outputs the following two lines
Error: bad target context--should NEVER happen;
please bug.report() [R_run_onexits]
a great number of times (this is on OS X 10.7 with Xcode 4.4.1, version
4.4.0.0.1.124936715 of the command line tools and R 2.15.1).
Debugging the above program indicates that the error happens in
installFunTab(). Not knowing R internals, I can only guess that state from the
first embedded instance leaks into the second instance.
Soeren Sonnenburg asked a similar question on March 5th 2009 but there was no
reply. He also mentioned a bug report
http://bugs.r-project.org/cgi-bin/R/trashcan?id=12644;user=guest;selectid=12644
but that link no longer works and bug # 12644 is not in the current database.
Can the above mentioned code be made to work?
Thank you,
Christian
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