* installing *source* package ‘hint’ ...
** this is package ‘hint’ version ‘0.1-3’
** package ‘hint’ successfully unpacked and MD5 sums checked
** using staged installation
** libs
using C compiler: ‘clang version 23.1.0-rc2’
using C++ compiler: ‘clang version 23.1.0-rc2’
make[1]: Entering directory '/data/localhost/ripley/R/packages/tests-clang-trunk/hint/src'
/usr/local/clang23/bin/clang -std=gnu23 -I"/data/localhost/ripley/R/R-clang-trunk/include" -DNDEBUG   -isystem /usr/local/clang23/include -I/usr/local/clang/include    -fpic  -O3 -Wall -pedantic -Wp,-D_FORTIFY_SOURCE=3  -c hint_init.c -o hint_init.o
/usr/local/clang23/bin/clang++ -std=gnu++20 -I"/data/localhost/ripley/R/R-clang-trunk/include" -DNDEBUG   -isystem /usr/local/clang23/include -I/usr/local/clang/include    -fpic  -O3 -Wall -pedantic -frtti -Wp,-D_FORTIFY_SOURCE=3 -Wno-missing-template-arg-list-after-template-kw   -c inters_dup_engine_optim.cpp -o inters_dup_engine_optim.o
inters_dup_engine_optim.cpp:33:29: error: use of undeclared identifier 'back_inserter'
   33 |         copy(range, range + *rlen, back_inserter(vrange));
      |                                    ^~~~~~~~~~~~~
1 error generated.
make[1]: *** [/data/localhost/ripley/R/R-clang-trunk/etc/Makeconf:197: inters_dup_engine_optim.o] Error 1
make[1]: Target 'all' not remade because of errors.
make[1]: Leaving directory '/data/localhost/ripley/R/packages/tests-clang-trunk/hint/src'
ERROR: compilation failed for package ‘hint’
* removing ‘/data/localhost/ripley/R/packages/tests-clang-trunk/hint.Rcheck/hint’