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diff --git a/sys/kern/tty_subr.c b/sys/kern/tty_subr.c --- a/sys/kern/tty_subr.c +++ b/sys/kern/tty_subr.c @@ -130,6 +130,8 @@ int i; short c; + if (n < 0) + n = 0; if (n > cl->c_cc) n = cl->c_cc; count = n;