* installing to library ‘/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages’ * installing *source* package ‘MAINT.Data’ ... ** package ‘MAINT.Data’ successfully unpacked and MD5 sums checked ** using staged installation ** libs using C++ compiler: ‘Debian clang version 18.1.4 (1)’ make[1]: Entering directory '/tmp/RtmpEadNW5/R.INSTALL20b2193a18b439/MAINT.Data/src' clang++-18 -std=gnu++17 -I"/home/hornik/tmp/R.check/r-devel-clang/Work/build/include" -DNDEBUG -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/Rcpp/include' -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/RcppArmadillo/include' -I/usr/local/include -D_FORTIFY_SOURCE=3 -fpic -g -O3 -Wall -pedantic -c AdMatAlgFoo.cpp -o AdMatAlgFoo.o clang++-18 -std=gnu++17 -I"/home/hornik/tmp/R.check/r-devel-clang/Work/build/include" -DNDEBUG -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/Rcpp/include' -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/RcppArmadillo/include' -I/usr/local/include -D_FORTIFY_SOURCE=3 -fpic -g -O3 -Wall -pedantic -c AuxFoo.cpp -o AuxFoo.o clang++-18 -std=gnu++17 -I"/home/hornik/tmp/R.check/r-devel-clang/Work/build/include" -DNDEBUG -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/Rcpp/include' -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/RcppArmadillo/include' -I/usr/local/include -D_FORTIFY_SOURCE=3 -fpic -g -O3 -Wall -pedantic -c CEMGauss.cpp -o CEMGauss.o In file included from CEMGauss.cpp:10: ./msnCP_dev.h:41:43: warning: left operand of comma operator has no effect [-Wunused-value] 41 | for (int c=0;c