Cat more stuff

tests/tools/autotest.sh

@@ -227,6 +227,8 @@ do
 			echo "Note: Make sure that 'iverilog' is an up-to-date git checkout of Icarus Verilog."
 		fi
 		cat ${bn}.err
+		cat ${bn}_ref.v
+		cat ${bn}_syn.v
 		$keeprunning || exit 1
 	fi
 done