Bug: https://bugs.gentoo.org/894544
Upstream PR: https://github.com/cosmos72/detachtty/pull/6
--- a/attachtty.c
+++ b/attachtty.c
@@ -22,6 +22,7 @@
 
 #include <errno.h>
 #include <time.h>
+#include <string.h>
 
 #include "config.h"
 
--- a/config.h
+++ b/config.h
@@ -24,7 +24,7 @@
 #define DETACHTTY_CONFIG_H
 
 #include <netdb.h>
-#include <sys/poll.h>
+#include <poll.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/un.h>
--- a/copy-stream.c
+++ b/copy-stream.c
@@ -23,6 +23,7 @@
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/socket.h>
+#include <string.h>
 
 #include "config.h"
 
--- a/detachtty.c
+++ b/detachtty.c
@@ -26,6 +26,7 @@
 #include <sys/stat.h>
 #include <pty.h>
 #include <fcntl.h>
+#include <string.h>
 
 #ifndef UNIX_PATH_MAX
 # define UNIX_PATH_MAX    108