Simplified Dagger example source, suppressed false-positive leak warning.
#include <execinfo.h>
#include <objc/runtime.h>
+// Suppress a false-positive ARC-specific warning.
+#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
+
static void signalHandler(int sig) {
// Get void*'s for all entries on the stack.
void *array[64];
