cc -pipe -O   -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations dirent/struct-posix_dent.c -o dirent/struct-posix_dent -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lrt -lcrypt
dirent/struct-posix_dent.c:2:19: error: storage size of 'foo' isn't known
 struct posix_dent foo;
                   ^~~