"clang++-6.0"   -fvisibility-inlines-hidden -Wno-c99-extensions -std=c++17 -stdlib=libc++ -isystem/usr/include/libcxxabi -fPIC -pthread -O0 -fno-inline -Wall -fvisibility=hidden -m64 --target=x86_64-pc-linux  -DBOOST_ALL_NO_LIB=1 -DBOOST_COBALT_USE_STD_PMR=1 -DBOOST_CONTAINER_DYN_LINK=1 -DBOOST_CONTAINER_NO_LIB=1 -DBOOST_JSON_DYN_LINK=1 -DBOOST_JSON_NO_LIB=1 -DBOOST_SYSTEM_DYN_LINK=1 -DBOOST_SYSTEM_NO_LIB=1   -I".." -I"../libs/json/test" -I"/var/boost/run/boost_root/libs/assert/include" -I"/var/boost/run/boost_root/libs/container/include" -I"/var/boost/run/boost_root/libs/container_hash/include" -I"/var/boost/run/boost_root/libs/core/include" -I"/var/boost/run/boost_root/libs/describe/include" -I"/var/boost/run/boost_root/libs/endian/include" -I"/var/boost/run/boost_root/libs/intrusive/include" -I"/var/boost/run/boost_root/libs/json/include" -I"/var/boost/run/boost_root/libs/move/include" -I"/var/boost/run/boost_root/libs/mp11/include" -I"/var/boost/run/boost_root/libs/predef/include" -I"/var/boost/run/boost_root/libs/system/include" -I"/var/boost/run/boost_root/libs/throw_exception/include" -I"/var/boost/run/boost_root/libs/variant2/include" -I"/var/boost/run/boost_root/libs/winapi/include"  -c -o "/var/boost/run/results/boost/bin.v2/libs/json/test/doc_forward_conversion.test/clang-linux-6.0~c++17~lc/debug/x86_64/debug-symbols-off/threading-multi/visibility-hidden/doc_forward_conversion.o" "../libs/json/test/doc_forward_conversion.cpp"

../libs/json/test/doc_forward_conversion.cpp:130:19: error: no member named 'sprintf' in namespace 'std'
    auto n = std::sprintf(
             ~~~~~^
../libs/json/test/doc_forward_conversion.cpp:147:23: error: no member named 'sscanf' in namespace 'std'
    int result = std::sscanf(
                 ~~~~~^
2 errors generated.