cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations wctype/towctrans_l.c -o wctype/towctrans_l -D_POSIX_C_SOURCE=202405L  -lm -lpthread  -liconv
wctype/towctrans_l.c:5:34: error: type specifier missing, defaults to 'int' [-Werror,-Wimplicit-int]
wint_t (*foo)(wint_t, wctrans_t, locale_t) = towctrans_l;
                                 ^
wctype/towctrans_l.c:5:46: error: use of undeclared identifier 'towctrans_l'; did you mean 'towctrans'?
wint_t (*foo)(wint_t, wctrans_t, locale_t) = towctrans_l;
                                             ^~~~~~~~~~~
                                             towctrans
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/wctype.h:121:8: note: 'towctrans' declared here
wint_t  towctrans(wint_t, wctrans_t);
        ^
wctype/towctrans_l.c:5:10: error: incompatible function pointer types initializing 'wint_t (*)(wint_t, wctrans_t, int)' (aka 'int (*)(int, int, int)') with an expression of type 'wint_t (wint_t, wctrans_t)' (aka 'int (int, int)') [-Werror,-Wincompatible-function-pointer-types]
wint_t (*foo)(wint_t, wctrans_t, locale_t) = towctrans_l;
         ^                                   ~~~~~~~~~~~
3 errors generated.