cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations wctype/iswdigit_l.c -o wctype/iswdigit_l -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
wctype/iswdigit_l.c:5:32: error: ‘iswdigit_l’ undeclared here (not in a function); did you mean ‘iswdigit’?
    5 | int (*foo)(wint_t, locale_t) = iswdigit_l;
      |                                ^~~~~~~~~~
      |                                iswdigit