Adjustment of code generator to address #1368

org.lflang/src/org/lflang/generator/c/CTriggerObjectsGenerator.java

@@ -731,6 +731,9 @@ private static String deferredFillTriggerTable(
             }
             var cumulativePortWidth = 0;
             for (PortInstance port : Iterables.filter(reaction.effects, PortInstance.class)) {
+                // If this port does not have any destinations, do not generate code for it.
+                if (port.eventualDestinations().isEmpty()) continue;
+
                 code.pr("for (int i = 0; i < "+reaction.getParent().getTotalWidth()+"; i++) triggers_index[i] = "+cumulativePortWidth+";");
                 for (SendRange srcRange : port.eventualDestinations()) {
                     if (currentFederate.contains(port.getParent())) {

test/C/src/MultipleOutputs.lf

@@ -0,0 +1,22 @@
+// This test checks for one of the issues arised in the solution of EECS149 Lab Chapter 7.
+// In this case, a reactor has two output ports, the first one of which is dangling.
+// The generated code should not have any segmentation faults.
+target C {
+    timeout: 1 sec,
+    fast: true
+};
+reactor C {
+    output x:int;
+    output z:int;
+    timer t(0, 100 msec);
+    reaction(t) -> x, z {=
+        lf_set(x, 42);
+        lf_set(z, 44);
+    =}
+}
+main reactor {
+    c = new C();
+    reaction(c.z) {=
+        lf_print("c.z = %d", c.z->value);
+    =}
+}