"clang++-17"   -fvisibility-inlines-hidden -Wno-c99-extensions -std=c++20 -fPIC -pthread -O0 -fno-inline -Wall -Wextra -fvisibility=hidden -m64 -Wno-variadic-macros -DBOOST_ALL_NO_LIB=1 -DBOOST_COBALT_USE_STD_PMR=1   -I".."  -c -o "/mnt/fs1/run/teeks99-01/run/results/boost/bin.v2/libs/mpl/test/char.test/clang-linux-17~c++20/debug/riscv_64/debug-symbols-off/threading-multi/visibility-hidden/char.o" "../libs/mpl/test/char.cpp"

../libs/mpl/test/char.cpp:23:5: error: non-type template argument evaluates to -1, which cannot be narrowed to type 'char' [-Wc++11-narrowing]
   23 |     BOOST_PP_REPEAT(10, INTEGRAL_WRAPPER_TEST, char)
      |     ^
../boost/preprocessor/repetition/repeat.hpp:30:26: note: expanded from macro 'BOOST_PP_REPEAT'
   30 | # define BOOST_PP_REPEAT BOOST_PP_CAT(BOOST_PP_REPEAT_, BOOST_PP_AUTO_REC(BOOST_PP_REPEAT_P, 4))
      |                          ^
../boost/preprocessor/cat.hpp:22:32: note: expanded from macro 'BOOST_PP_CAT'
   22 | #    define BOOST_PP_CAT(a, b) BOOST_PP_CAT_I(a, b)
      |                                ^
../boost/preprocessor/cat.hpp:29:34: note: expanded from macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
note: (skipping 11 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
../boost/preprocessor/repetition/limits/repeat_256.hpp:20:36: note: expanded from macro 'BOOST_PP_REPEAT_1_3'
   20 | # define BOOST_PP_REPEAT_1_3(m, d) BOOST_PP_REPEAT_1_2(m, d) m(2, 2, d)
      |                                    ^
../boost/preprocessor/repetition/limits/repeat_256.hpp:19:36: note: expanded from macro 'BOOST_PP_REPEAT_1_2'
   19 | # define BOOST_PP_REPEAT_1_2(m, d) BOOST_PP_REPEAT_1_1(m, d) m(2, 1, d)
      |                                    ^
../boost/preprocessor/repetition/limits/repeat_256.hpp:18:41: note: expanded from macro 'BOOST_PP_REPEAT_1_1'
   18 | # define BOOST_PP_REPEAT_1_1(m, d) m(2, 0, d)
      |                                         ^
1 error generated.