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author AJR <ajrhacker@users.noreply.github.com>2019-07-12 09:39:39 -0400
committer AJR <ajrhacker@users.noreply.github.com>2019-07-12 09:39:39 -0400
commit46b0fa88be0bce3d39ca0daa204f2500263802cc (patch)
treea1fe1ca740cc94a31424a4e3ada9b711e933d942 /src/devices/bus/sms_ctrl/multitap.cpp
parent12e99942ff3048f3e8f45f2a00039cb09108b385 (diff)
bus/gamegear, bus/nes_ctrl, bus/sms_ctrl: Prevent crashing during validation (nw)
Diffstat (limited to 'src/devices/bus/sms_ctrl/multitap.cpp')
-rw-r--r--src/devices/bus/sms_ctrl/multitap.cpp11
1 files changed, 7 insertions, 4 deletions
diff --git a/src/devices/bus/sms_ctrl/multitap.cpp b/src/devices/bus/sms_ctrl/multitap.cpp
index 2e5c0e0701a..74d6c749cb5 100644
--- a/src/devices/bus/sms_ctrl/multitap.cpp
+++ b/src/devices/bus/sms_ctrl/multitap.cpp
@@ -131,8 +131,11 @@ void sms_multitap_device::device_add_mconfig(machine_config &config)
SMS_CONTROL_PORT(config, m_subctrl2_port, sms_control_port_devices, "joypad");
SMS_CONTROL_PORT(config, m_subctrl3_port, sms_control_port_devices, "joypad");
SMS_CONTROL_PORT(config, m_subctrl4_port, sms_control_port_devices, "joypad");
- m_subctrl1_port->set_screen_tag(m_port->m_screen);
- m_subctrl2_port->set_screen_tag(m_port->m_screen);
- m_subctrl3_port->set_screen_tag(m_port->m_screen);
- m_subctrl4_port->set_screen_tag(m_port->m_screen);
+ if (m_port != nullptr)
+ {
+ m_subctrl1_port->set_screen_tag(m_port->m_screen);
+ m_subctrl2_port->set_screen_tag(m_port->m_screen);
+ m_subctrl3_port->set_screen_tag(m_port->m_screen);
+ m_subctrl4_port->set_screen_tag(m_port->m_screen);
+ }
}