cc -O2 -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations wchar/wcpncpy.c -o wchar/wcpncpy -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lintl -lcrypt
wchar/wcpncpy.c:5:71: error: 'wcpncpy' undeclared here (not in a function); did you mean 'wcsncpy'?
    5 | wchar_t *(*foo)(wchar_t *restrict, const wchar_t *restrict, size_t) = wcpncpy;
      |                                                                       ^~~~~~~
      |                                                                       wcsncpy