diff -r f1fb228b43ac tools/ioemu/vl.c
--- a/tools/ioemu/vl.c	Mon Aug 31 09:45:27 2009 +0100
+++ b/tools/ioemu/vl.c	Mon Oct 26 13:00:11 2009 +0100
@@ -1914,8 +1914,11 @@ static CharDriverState *qemu_chr_open_pt
     }
     
     /* Set raw attributes on the pty. */
+    if (tcgetattr(master_fd, &tty) < 0)
+        perror("tcgetattr failed");
     cfmakeraw(&tty);
-    tcsetattr(slave_fd, TCSAFLUSH, &tty);
+    if (tcsetattr(slave_fd, TCSAFLUSH, &tty) < 0)
+        perror("tcsetattr failed");
 
     fprintf(stderr, "char device redirected to %s\n", ptsname(master_fd));