cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations ctype/tolower_l.c -o ctype/tolower_l -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt 
relibc getrlimit(3, 0x7ffffffffc80): not implemented
relibc getrlimit(3, 0x7ffffffffbb0): not implemented
relibc getrlimit(9, 0x7ffffffffb70): not implemented
relibc getrlimit(9, 0x7ffffffffba0): not implemented
relibc getrlimit(5, 0x7ffffffffba0): not implemented
relibc getrlimit(9, 0x7ffffffffb70): not implemented
ctype/tolower_l.c:5:17: error: unknown type name 'locale_t'
    5 | int (*foo)(int, locale_t) = tolower_l;
      |                 ^~~~~~~~