cc -pipe -O   -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations search/twalk.c -o search/twalk -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lrt -lcrypt
search/twalk.c:11:19: error: unknown type name 'posix_tnode'
 void (*foo)(const posix_tnode *, void (*)(const posix_tnode *, VISIT, int)) = twalk;
                   ^~~~~~~~~~~
search/twalk.c:11:49: error: unknown type name 'posix_tnode'
 void (*foo)(const posix_tnode *, void (*)(const posix_tnode *, VISIT, int)) = twalk;
                                                 ^~~~~~~~~~~
search/twalk.c:11:79: error: initialization of 'void (*)(const int *, void (*)(const int *, VISIT,  int))' {aka 'void (*)(const int *, void (*)(const int *, enum <anonymous>,  int))'} from incompatible pointer type 'void (*)(const void *, void (*)(const void *, VISIT,  int))' {aka 'void (*)(const void *, void (*)(const void *, enum <anonymous>,  int))'} [-Werror=incompatible-pointer-types]
 void (*foo)(const posix_tnode *, void (*)(const posix_tnode *, VISIT, int)) = twalk;
                                                                               ^~~~~
cc1: all warnings being treated as errors