// Add a function to be called before each firing of comm0
// This function modifies the graph of tasks by adding or removing
// successors to comm0
- comm0->on_this_start_cb([comm0, exec1, exec2, jupiter, fafard](const sg4::Task*) {
+ comm0->on_this_start_cb([&comm0, exec1, exec2, jupiter, fafard](const sg4::Task*) {
static int count = 0;
if (count % 2 == 0) {
comm0->set_destination(jupiter);