cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations string/strerror_l.c -o string/strerror_l -D_POSIX_C_SOURCE=202405L  -lm -lpthread  -liconv
string/strerror_l.c:5:19: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
    5 | char *(*foo)(int, locale_t) = strerror_l;
      |                   ^
      |                   int
string/strerror_l.c:5:31: error: use of undeclared identifier 'strerror_l'; did you mean 'strerror_r'?
    5 | char *(*foo)(int, locale_t) = strerror_l;
      |                               ^~~~~~~~~~
      |                               strerror_r
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/_string.h:116:6: note: 'strerror_r' declared here
  116 | int      strerror_r(int __errnum, char *__strerrbuf, size_t __buflen);
      |          ^
string/strerror_l.c:5:9: error: incompatible function pointer types initializing 'char *(*)(int, int)' with an expression of type 'int (int, char *, size_t)' (aka 'int (int, char *, unsigned long)') [-Wincompatible-function-pointer-types]
    5 | char *(*foo)(int, locale_t) = strerror_l;
      |         ^                     ~~~~~~~~~~
3 errors generated.