* installing *source* package ‘BiasedUrn’ ...
** using staged installation
** libs
using C++ compiler: ‘Debian clang version 18.1.5 (2)’
clang++-18  -std=gnu++17 -I"/home/hornik/tmp/R-d-clang-18/include" -DNDEBUG -DR_BUILD=1 -DMAXCOLORS=32  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c fnchyppr.cpp -o fnchyppr.o
clang++-18  -std=gnu++17 -I"/home/hornik/tmp/R-d-clang-18/include" -DNDEBUG -DR_BUILD=1 -DMAXCOLORS=32  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c stoc1.cpp -o stoc1.o
clang++-18  -std=gnu++17 -I"/home/hornik/tmp/R-d-clang-18/include" -DNDEBUG -DR_BUILD=1 -DMAXCOLORS=32  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c stoc3.cpp -o stoc3.o
clang++-18  -std=gnu++17 -I"/home/hornik/tmp/R-d-clang-18/include" -DNDEBUG -DR_BUILD=1 -DMAXCOLORS=32  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c stocR.cpp -o stocR.o
stocR.cpp:24:5: error: use of undeclared identifier 'error'
   24 |     error("%s", ErrorText);             // Error exit in R.DLL
      |     ^
1 error generated.
make: *** [/home/hornik/tmp/R-d-clang-18/etc/Makeconf:202: stocR.o] Error 1
ERROR: compilation failed for package ‘BiasedUrn’
* removing ‘/srv/hornik/tmp/CRAN/BiasedUrn.Rcheck/BiasedUrn’