cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations wchar/fgetws.c -o wchar/fgetws -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
wchar/fgetws.c:5:59: error: ‘fgetws’ undeclared here (not in a function)
    5 | wchar_t *(*foo)(wchar_t *restrict, int, FILE *restrict) = fgetws;
      |                                                           ^~~~~~