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author Nathan Woods <npwoods@mess.org>2011-11-12 13:38:42 +0000
committer Nathan Woods <npwoods@mess.org>2011-11-12 13:38:42 +0000
commit6fc97697152223184c2fa520793def5107876eaa (patch)
tree4f5358d19a016401956094639546e6f5a4e08be6
parent1be53140ef8b6733402e69d9e96ee43eaa798e7e (diff)
Adding assertion
-rw-r--r--src/emu/ioport.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/emu/ioport.c b/src/emu/ioport.c
index c1e55ff6176..8ad335b2327 100644
--- a/src/emu/ioport.c
+++ b/src/emu/ioport.c
@@ -1513,6 +1513,8 @@ input_port_value input_port_active_safe(running_machine &machine, const char *ta
input_port_value input_port_read_direct(const input_port_config *port)
{
+ assert(port != NULL);
+
input_port_private *portdata = port->machine().input_port_data;
analog_field_state *analog;
device_field_info *device_field;