diff options
| -rw-r--r-- | sysdeps/mach/hurd/ioctl.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/ioctl.c b/sysdeps/mach/hurd/ioctl.c index 662e8ee919..0d5bc176d1 100644 --- a/sysdeps/mach/hurd/ioctl.c +++ b/sysdeps/mach/hurd/ioctl.c @@ -113,6 +113,10 @@ __ioctl (int fd, unsigned long int request, ...) /* We don't want to advance ARG since it will be used to copy out too if IOC_OUT is also set. */ void *argptr = arg; + int zero = 0; + + if (request == TIOCFLUSH && !arg) + arg = &zero; /* Pack an argument into the message buffer. */ void in (unsigned int count, enum __ioctl_datum type) |