* installing *source* package ‘MDFS’ ...
** this is package ‘MDFS’ version ‘1.5.5’
** package ‘MDFS’ successfully unpacked and MD5 sums checked
** using staged installation
MDFS: Running configure
** libs
specified C++17
using C++ compiler: ‘clang version 23.1.0-rc2’
using C++17
make[1]: Entering directory '/data/localhost/ripley/R/packages/tests-clang-trunk/MDFS/src'
/usr/local/clang23/bin/clang++ -std=gnu++17 -I"/data/localhost/ripley/R/R-clang-trunk/include" -DNDEBUG   -isystem /usr/local/clang23/include -I/usr/local/clang/include   -fvisibility=hidden -fopenmp -fpic  -O3 -Wall -pedantic -frtti -Wp,-D_FORTIFY_SOURCE=3 -Wno-missing-template-arg-list-after-template-kw   -c cpu/discretize.cpp -o cpu/discretize.o
/usr/local/clang23/bin/clang++ -std=gnu++17 -I"/data/localhost/ripley/R/R-clang-trunk/include" -DNDEBUG   -isystem /usr/local/clang23/include -I/usr/local/clang/include   -fvisibility=hidden -fopenmp -fpic  -O3 -Wall -pedantic -frtti -Wp,-D_FORTIFY_SOURCE=3 -Wno-missing-template-arg-list-after-template-kw   -c cpu/common.cpp -o cpu/common.o
/usr/local/clang23/bin/clang++ -std=gnu++17 -I"/data/localhost/ripley/R/R-clang-trunk/include" -DNDEBUG   -isystem /usr/local/clang23/include -I/usr/local/clang/include   -fvisibility=hidden -fopenmp -fpic  -O3 -Wall -pedantic -frtti -Wp,-D_FORTIFY_SOURCE=3 -Wno-missing-template-arg-list-after-template-kw   -c r_init.cpp -o r_init.o
/usr/local/clang23/bin/clang++ -std=gnu++17 -I"/data/localhost/ripley/R/R-clang-trunk/include" -DNDEBUG   -isystem /usr/local/clang23/include -I/usr/local/clang/include   -fvisibility=hidden -fopenmp -fpic  -O3 -Wall -pedantic -frtti -Wp,-D_FORTIFY_SOURCE=3 -Wno-missing-template-arg-list-after-template-kw   -c r_interface.cpp -o r_interface.o
In file included from r_interface.cpp:3:
./cpu/mdfs.h:274:30: error: no member named 'back_inserter' in namespace 'std'
  274 |                         std::back_inserter(current_interesting_vars));
      |                              ^~~~~~~~~~~~~
./cpu/mdfs.h:338:34: error: no member named 'back_inserter' in namespace 'std'
  338 |                             std::back_inserter(current_interesting_vars));
      |                                  ^~~~~~~~~~~~~
2 errors generated.
make[1]: *** [/data/localhost/ripley/R/R-clang-trunk/etc/Makeconf:197: r_interface.o] Error 1
make[1]: Target 'all' not remade because of errors.
make[1]: Leaving directory '/data/localhost/ripley/R/packages/tests-clang-trunk/MDFS/src'
ERROR: compilation failed for package ‘MDFS’
* removing ‘/data/localhost/ripley/R/packages/tests-clang-trunk/MDFS.Rcheck/MDFS’