Adding missing file

unittest/examples/core-t.c

@@ -0,0 +1,19 @@
+
+#include "my_config.h"
+
+#include <stdlib.h>
+#include <tap.h>
+
+/*
+  This is a simple test to demonstrate what happens if a signal that
+  generates a core is raised.
+
+  Note that this test will stop all further testing!
+ */
+
+int main() {
+  plan(3);
+  ok(1, "First test");
+  abort();
+  return exit_status();
+}