gcc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations stdlib/ptsname_r.c -o stdlib/ptsname_r -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lxnet -lsocket -latomic
stdlib/ptsname_r.c:11:35: error: ‘ptsname_r’ undeclared here (not in a function)
   11 | int (*foo)(int, char *, size_t) = ptsname_r;
      |                                   ^~~~~~~~~