set_string
set_string(&o->host_key_files[0], NULL);
set_string(&o->host_key_files[1], "");
set_string(&o->host_key_files[2], "/tmp/ssh_host_ed25519_key");
set_string(&o->queued_listen_addrs[0].addr, "127.0.0.1");
set_string(&o->queued_listen_addrs[0].rdomain, NULL);
set_string(&o->queued_listen_addrs[1].addr, "::1");
set_string(&o->queued_listen_addrs[1].rdomain, "");
set_string(&o->subsystem_name[0], "sftp");
set_string(&o->subsystem_command[0], "internal-sftp");
set_string(&o->subsystem_args[0], "internal-sftp -f AUTH");
set_string(&o->subsystem_name[1], "echo");
set_string(&o->subsystem_command[1], "/bin/echo");
set_string(&o->subsystem_args[1], "/bin/echo hello");
set_string(&o->permit_user_env_allowlist, "");
set_string(&o->routing_domain, "");
set_string(&o->banner, NULL);
set_string(&o->adm_forced_command, "internal-sftp");
set_string(&o->chroot_directory, "");
set_string(&o->host_key_agent, NULL);
set_string(&o->authorized_keys_command, "/bin/echo");
set_string(&o->authorized_keys_command_user, "");
set_string(&o->authorized_principals_file, NULL);
set_string(&o->authorized_keys_files[0], NULL);
set_string(&o->authorized_keys_files[1], "");
set_string(&o->authorized_keys_files[2], ".ssh/authorized_keys");
set_string(&o->log_verbose[0], NULL);
set_string(&o->log_verbose[1], "kex.c:*");
int set_string;
if (x509_format_tests[idx].set_string) {