Don't pass -1 as the length to write() if read() fails

2017-11-17 23:06:46 +11:00
parent 149b3206e0
commit 0abfa67aa8
1 changed files with 4 additions and 2 deletions
--- a/source/scr-bx.c
+++ b/source/scr-bx.c
@@ -505,11 +505,13 @@ void reattach_tty(char *tty, char *password)
 				if (FD_ISSET(0, &rd_fd))
 				{
 					len = read(0, buffer, sizeof(buffer)-1);
+					if (len > 0)
 						write(s, buffer, len);
 				}
 				if (FD_ISSET(s, &rd_fd))
 				{
 					len = read(s, buffer, sizeof(buffer)-1);
+					if (len > 0)
 						write(1, buffer, len);
 				}
 			}