gcc -pthread  -Wall -Wextra -Werror=implicit-function-declaration unistd/ttyname_r.c -o unistd/ttyname_r -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt -lxnet -lsocket -latomic
unistd/ttyname_r.c: In function 'main':
unistd/ttyname_r.c:46:30: error: initialization of 'int' from 'char *' makes integer from pointer without a cast [-Wint-conversion]
   46 |                 int errnum = ttyname_r(pty, result, sizeof(result));
      |                              ^~~~~~~~~